/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 18:30:44,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 18:30:44,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 18:30:44,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 18:30:44,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 18:30:44,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 18:30:44,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 18:30:44,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 18:30:44,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 18:30:44,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 18:30:44,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 18:30:44,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 18:30:44,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 18:30:44,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 18:30:44,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 18:30:44,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 18:30:44,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 18:30:44,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 18:30:44,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 18:30:44,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 18:30:44,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 18:30:44,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 18:30:44,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 18:30:44,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 18:30:44,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 18:30:44,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 18:30:44,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 18:30:44,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 18:30:44,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-01-16 18:30:44,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 18:30:44,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 18:30:44,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 18:30:44,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 18:30:44,766 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 18:30:44,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 18:30:44,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 18:30:44,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 18:30:44,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 18:30:44,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 18:30:44,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 18:30:44,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 18:30:44,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 18:30:44,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 18:30:44,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 18:30:44,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 18:30:44,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 18:30:44,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 18:30:44,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 18:30:44,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 18:30:44,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 18:30:44,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:30:44,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 18:30:44,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 18:30:44,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 18:30:44,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 18:30:44,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 18:30:44,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 18:30:44,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 18:30:45,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 18:30:45,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 18:30:45,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 18:30:45,081 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 18:30:45,082 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 18:30:45,082 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2020-01-16 18:30:45,083 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2020-01-16 18:30:45,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 18:30:45,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 18:30:45,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 18:30:45,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 18:30:45,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 18:30:45,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... [2020-01-16 18:30:45,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... [2020-01-16 18:30:45,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 18:30:45,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 18:30:45,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 18:30:45,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 18:30:45,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... [2020-01-16 18:30:45,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... [2020-01-16 18:30:45,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... [2020-01-16 18:30:45,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... [2020-01-16 18:30:45,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... [2020-01-16 18:30:45,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... [2020-01-16 18:30:45,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... [2020-01-16 18:30:45,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 18:30:45,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 18:30:45,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 18:30:45,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 18:30:45,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:30:45,252 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 18:30:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 18:30:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 18:30:45,253 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 18:30:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 18:30:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 18:30:45,254 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 18:30:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 18:30:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 18:30:45,254 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 18:30:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 18:30:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 18:30:45,255 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 18:30:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 18:30:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 18:30:45,255 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 18:30:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 18:30:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 18:30:45,257 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 18:30:45,434 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 18:30:45,434 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 18:30:45,435 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:30:45 BoogieIcfgContainer [2020-01-16 18:30:45,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 18:30:45,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 18:30:45,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 18:30:45,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 18:30:45,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:45" (1/2) ... [2020-01-16 18:30:45,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf34e29 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 06:30:45, skipping insertion in model container [2020-01-16 18:30:45,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:30:45" (2/2) ... [2020-01-16 18:30:45,448 INFO L109 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2020-01-16 18:30:45,471 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 18:30:45,471 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 18:30:45,479 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 18:30:45,480 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 18:30:45,614 INFO L250 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-01-16 18:30:45,635 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 18:30:45,636 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 18:30:45,636 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 18:30:45,636 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 18:30:45,636 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 18:30:45,636 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 18:30:45,637 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 18:30:45,637 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 18:30:45,651 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 48 transitions [2020-01-16 18:30:45,653 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-01-16 18:30:45,751 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-01-16 18:30:45,751 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 18:30:45,766 INFO L76 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 321 event pairs. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2020-01-16 18:30:45,771 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-01-16 18:30:45,804 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-01-16 18:30:45,805 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 18:30:45,807 INFO L76 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 321 event pairs. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2020-01-16 18:30:45,809 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 440 [2020-01-16 18:30:45,810 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 18:30:45,958 INFO L206 etLargeBlockEncoding]: Checked pairs total: 130 [2020-01-16 18:30:45,958 INFO L214 etLargeBlockEncoding]: Total number of compositions: 6 [2020-01-16 18:30:45,962 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 42 transitions [2020-01-16 18:30:45,998 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 276 states. [2020-01-16 18:30:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-01-16 18:30:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:46,017 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:46,018 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:46,018 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:46,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:46,025 INFO L82 PathProgramCache]: Analyzing trace with hash 543435427, now seen corresponding path program 1 times [2020-01-16 18:30:46,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:46,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727681511] [2020-01-16 18:30:46,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:46,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727681511] [2020-01-16 18:30:46,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:46,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:30:46,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500646310] [2020-01-16 18:30:46,196 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:30:46,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:46,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:30:46,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:46,214 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 3 states. [2020-01-16 18:30:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:46,273 INFO L93 Difference]: Finished difference Result 228 states and 684 transitions. [2020-01-16 18:30:46,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:30:46,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-01-16 18:30:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:46,292 INFO L225 Difference]: With dead ends: 228 [2020-01-16 18:30:46,292 INFO L226 Difference]: Without dead ends: 227 [2020-01-16 18:30:46,294 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:46,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-01-16 18:30:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-01-16 18:30:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-01-16 18:30:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 683 transitions. [2020-01-16 18:30:46,374 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 683 transitions. Word has length 16 [2020-01-16 18:30:46,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:46,378 INFO L478 AbstractCegarLoop]: Abstraction has 227 states and 683 transitions. [2020-01-16 18:30:46,378 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:30:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 683 transitions. [2020-01-16 18:30:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:46,386 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:46,387 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:46,387 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:46,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:46,387 INFO L82 PathProgramCache]: Analyzing trace with hash 867723203, now seen corresponding path program 1 times [2020-01-16 18:30:46,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:46,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804902587] [2020-01-16 18:30:46,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:46,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804902587] [2020-01-16 18:30:46,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:46,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:30:46,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904082992] [2020-01-16 18:30:46,443 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:30:46,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:46,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:30:46,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:46,444 INFO L87 Difference]: Start difference. First operand 227 states and 683 transitions. Second operand 3 states. [2020-01-16 18:30:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:46,471 INFO L93 Difference]: Finished difference Result 211 states and 611 transitions. [2020-01-16 18:30:46,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:30:46,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-01-16 18:30:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:46,475 INFO L225 Difference]: With dead ends: 211 [2020-01-16 18:30:46,475 INFO L226 Difference]: Without dead ends: 211 [2020-01-16 18:30:46,476 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-01-16 18:30:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-01-16 18:30:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-01-16 18:30:46,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 611 transitions. [2020-01-16 18:30:46,496 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 611 transitions. Word has length 16 [2020-01-16 18:30:46,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:46,497 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 611 transitions. [2020-01-16 18:30:46,497 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:30:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 611 transitions. [2020-01-16 18:30:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:46,500 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:46,500 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:46,500 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1800356309, now seen corresponding path program 1 times [2020-01-16 18:30:46,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:46,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024831607] [2020-01-16 18:30:46,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:46,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024831607] [2020-01-16 18:30:46,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:46,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:30:46,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350593135] [2020-01-16 18:30:46,537 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:30:46,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:46,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:30:46,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:46,538 INFO L87 Difference]: Start difference. First operand 211 states and 611 transitions. Second operand 3 states. [2020-01-16 18:30:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:46,557 INFO L93 Difference]: Finished difference Result 147 states and 391 transitions. [2020-01-16 18:30:46,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:30:46,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-01-16 18:30:46,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:46,560 INFO L225 Difference]: With dead ends: 147 [2020-01-16 18:30:46,560 INFO L226 Difference]: Without dead ends: 147 [2020-01-16 18:30:46,561 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-01-16 18:30:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-01-16 18:30:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:30:46,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 391 transitions. [2020-01-16 18:30:46,585 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 391 transitions. Word has length 16 [2020-01-16 18:30:46,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:46,585 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 391 transitions. [2020-01-16 18:30:46,585 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:30:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 391 transitions. [2020-01-16 18:30:46,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:46,588 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:46,588 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:46,588 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:46,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:46,589 INFO L82 PathProgramCache]: Analyzing trace with hash 536228197, now seen corresponding path program 1 times [2020-01-16 18:30:46,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:46,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70291969] [2020-01-16 18:30:46,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:46,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70291969] [2020-01-16 18:30:46,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:46,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:30:46,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880484076] [2020-01-16 18:30:46,635 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:30:46,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:46,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:30:46,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:46,636 INFO L87 Difference]: Start difference. First operand 147 states and 391 transitions. Second operand 3 states. [2020-01-16 18:30:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:46,649 INFO L93 Difference]: Finished difference Result 95 states and 241 transitions. [2020-01-16 18:30:46,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:30:46,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-01-16 18:30:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:46,651 INFO L225 Difference]: With dead ends: 95 [2020-01-16 18:30:46,651 INFO L226 Difference]: Without dead ends: 95 [2020-01-16 18:30:46,652 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-01-16 18:30:46,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-01-16 18:30:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:30:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 241 transitions. [2020-01-16 18:30:46,658 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 241 transitions. Word has length 16 [2020-01-16 18:30:46,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:46,659 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 241 transitions. [2020-01-16 18:30:46,659 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:30:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 241 transitions. [2020-01-16 18:30:46,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:46,660 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:46,660 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:46,660 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:46,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1934968637, now seen corresponding path program 1 times [2020-01-16 18:30:46,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:46,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055811724] [2020-01-16 18:30:46,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:47,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055811724] [2020-01-16 18:30:47,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:47,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:47,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932464737] [2020-01-16 18:30:47,098 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:47,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:47,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:47,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:47,100 INFO L87 Difference]: Start difference. First operand 95 states and 241 transitions. Second operand 7 states. [2020-01-16 18:30:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:47,176 INFO L93 Difference]: Finished difference Result 155 states and 326 transitions. [2020-01-16 18:30:47,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:47,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:47,178 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:30:47,178 INFO L226 Difference]: Without dead ends: 148 [2020-01-16 18:30:47,179 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-01-16 18:30:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 100. [2020-01-16 18:30:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-01-16 18:30:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 252 transitions. [2020-01-16 18:30:47,187 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 252 transitions. Word has length 16 [2020-01-16 18:30:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:47,187 INFO L478 AbstractCegarLoop]: Abstraction has 100 states and 252 transitions. [2020-01-16 18:30:47,187 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 252 transitions. [2020-01-16 18:30:47,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:47,188 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:47,188 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:47,189 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:47,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1391533921, now seen corresponding path program 2 times [2020-01-16 18:30:47,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:47,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120874197] [2020-01-16 18:30:47,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:47,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:47,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120874197] [2020-01-16 18:30:47,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:47,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:47,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507523805] [2020-01-16 18:30:47,511 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:47,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:47,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:47,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:47,513 INFO L87 Difference]: Start difference. First operand 100 states and 252 transitions. Second operand 7 states. [2020-01-16 18:30:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:47,582 INFO L93 Difference]: Finished difference Result 160 states and 334 transitions. [2020-01-16 18:30:47,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:47,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:47,584 INFO L225 Difference]: With dead ends: 160 [2020-01-16 18:30:47,584 INFO L226 Difference]: Without dead ends: 146 [2020-01-16 18:30:47,585 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-01-16 18:30:47,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 98. [2020-01-16 18:30:47,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-01-16 18:30:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 247 transitions. [2020-01-16 18:30:47,591 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 247 transitions. Word has length 16 [2020-01-16 18:30:47,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:47,591 INFO L478 AbstractCegarLoop]: Abstraction has 98 states and 247 transitions. [2020-01-16 18:30:47,591 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 247 transitions. [2020-01-16 18:30:47,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:47,592 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:47,593 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:47,593 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:47,593 INFO L82 PathProgramCache]: Analyzing trace with hash -870593663, now seen corresponding path program 3 times [2020-01-16 18:30:47,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:47,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747961316] [2020-01-16 18:30:47,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:47,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747961316] [2020-01-16 18:30:47,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:47,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:47,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169974568] [2020-01-16 18:30:47,808 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:47,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:47,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:47,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:47,809 INFO L87 Difference]: Start difference. First operand 98 states and 247 transitions. Second operand 7 states. [2020-01-16 18:30:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:47,863 INFO L93 Difference]: Finished difference Result 152 states and 319 transitions. [2020-01-16 18:30:47,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:47,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:47,865 INFO L225 Difference]: With dead ends: 152 [2020-01-16 18:30:47,866 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:30:47,866 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:47,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:30:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 99. [2020-01-16 18:30:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-01-16 18:30:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 248 transitions. [2020-01-16 18:30:47,872 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 248 transitions. Word has length 16 [2020-01-16 18:30:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:47,872 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 248 transitions. [2020-01-16 18:30:47,873 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 248 transitions. [2020-01-16 18:30:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:47,874 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:47,874 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:47,874 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:47,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2071878669, now seen corresponding path program 4 times [2020-01-16 18:30:47,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:47,875 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432886176] [2020-01-16 18:30:47,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:48,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432886176] [2020-01-16 18:30:48,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:48,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:48,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339693578] [2020-01-16 18:30:48,083 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:48,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:48,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:48,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:48,084 INFO L87 Difference]: Start difference. First operand 99 states and 248 transitions. Second operand 7 states. [2020-01-16 18:30:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:48,164 INFO L93 Difference]: Finished difference Result 155 states and 324 transitions. [2020-01-16 18:30:48,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:48,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:48,166 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:30:48,166 INFO L226 Difference]: Without dead ends: 144 [2020-01-16 18:30:48,167 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-01-16 18:30:48,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 98. [2020-01-16 18:30:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-01-16 18:30:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 246 transitions. [2020-01-16 18:30:48,174 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 246 transitions. Word has length 16 [2020-01-16 18:30:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:48,174 INFO L478 AbstractCegarLoop]: Abstraction has 98 states and 246 transitions. [2020-01-16 18:30:48,174 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 246 transitions. [2020-01-16 18:30:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:48,175 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:48,175 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:48,176 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:48,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1881104299, now seen corresponding path program 5 times [2020-01-16 18:30:48,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:48,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936579857] [2020-01-16 18:30:48,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:48,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936579857] [2020-01-16 18:30:48,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:48,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:48,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257136935] [2020-01-16 18:30:48,413 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:48,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:48,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:48,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:48,414 INFO L87 Difference]: Start difference. First operand 98 states and 246 transitions. Second operand 7 states. [2020-01-16 18:30:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:48,472 INFO L93 Difference]: Finished difference Result 167 states and 348 transitions. [2020-01-16 18:30:48,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:48,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:48,474 INFO L225 Difference]: With dead ends: 167 [2020-01-16 18:30:48,474 INFO L226 Difference]: Without dead ends: 155 [2020-01-16 18:30:48,474 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:48,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-01-16 18:30:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 104. [2020-01-16 18:30:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-01-16 18:30:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 255 transitions. [2020-01-16 18:30:48,480 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 255 transitions. Word has length 16 [2020-01-16 18:30:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:48,482 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 255 transitions. [2020-01-16 18:30:48,482 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 255 transitions. [2020-01-16 18:30:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:48,483 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:48,483 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:48,484 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1878970879, now seen corresponding path program 6 times [2020-01-16 18:30:48,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:48,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764262960] [2020-01-16 18:30:48,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:48,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764262960] [2020-01-16 18:30:48,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:48,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:48,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464982464] [2020-01-16 18:30:48,688 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:48,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:48,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:48,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:48,689 INFO L87 Difference]: Start difference. First operand 104 states and 255 transitions. Second operand 7 states. [2020-01-16 18:30:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:48,749 INFO L93 Difference]: Finished difference Result 165 states and 340 transitions. [2020-01-16 18:30:48,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:48,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:48,751 INFO L225 Difference]: With dead ends: 165 [2020-01-16 18:30:48,751 INFO L226 Difference]: Without dead ends: 146 [2020-01-16 18:30:48,752 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-01-16 18:30:48,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 95. [2020-01-16 18:30:48,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:30:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 238 transitions. [2020-01-16 18:30:48,759 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 238 transitions. Word has length 16 [2020-01-16 18:30:48,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:48,759 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 238 transitions. [2020-01-16 18:30:48,759 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:48,759 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 238 transitions. [2020-01-16 18:30:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:48,760 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:48,760 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:48,761 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:48,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:48,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1274477111, now seen corresponding path program 7 times [2020-01-16 18:30:48,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:48,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528628435] [2020-01-16 18:30:48,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:48,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528628435] [2020-01-16 18:30:48,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:48,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:48,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010488641] [2020-01-16 18:30:48,935 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:48,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:48,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:48,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:48,936 INFO L87 Difference]: Start difference. First operand 95 states and 238 transitions. Second operand 7 states. [2020-01-16 18:30:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:48,985 INFO L93 Difference]: Finished difference Result 151 states and 315 transitions. [2020-01-16 18:30:48,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:48,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:48,987 INFO L225 Difference]: With dead ends: 151 [2020-01-16 18:30:48,987 INFO L226 Difference]: Without dead ends: 144 [2020-01-16 18:30:48,988 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-01-16 18:30:48,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 99. [2020-01-16 18:30:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-01-16 18:30:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 247 transitions. [2020-01-16 18:30:48,993 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 247 transitions. Word has length 16 [2020-01-16 18:30:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:48,993 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 247 transitions. [2020-01-16 18:30:48,993 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 247 transitions. [2020-01-16 18:30:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:48,994 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:48,994 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:48,994 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:48,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:48,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1817911827, now seen corresponding path program 8 times [2020-01-16 18:30:48,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:48,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702369386] [2020-01-16 18:30:48,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:49,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702369386] [2020-01-16 18:30:49,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:49,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:49,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504597843] [2020-01-16 18:30:49,222 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:49,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:49,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:49,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:49,223 INFO L87 Difference]: Start difference. First operand 99 states and 247 transitions. Second operand 7 states. [2020-01-16 18:30:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:49,278 INFO L93 Difference]: Finished difference Result 156 states and 323 transitions. [2020-01-16 18:30:49,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:49,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:49,280 INFO L225 Difference]: With dead ends: 156 [2020-01-16 18:30:49,280 INFO L226 Difference]: Without dead ends: 142 [2020-01-16 18:30:49,281 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-01-16 18:30:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 97. [2020-01-16 18:30:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:30:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 242 transitions. [2020-01-16 18:30:49,285 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 242 transitions. Word has length 16 [2020-01-16 18:30:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:49,285 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 242 transitions. [2020-01-16 18:30:49,286 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 242 transitions. [2020-01-16 18:30:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:49,286 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:49,286 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:49,287 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1531085189, now seen corresponding path program 9 times [2020-01-16 18:30:49,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:49,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593483375] [2020-01-16 18:30:49,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:49,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593483375] [2020-01-16 18:30:49,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:49,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:49,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779247227] [2020-01-16 18:30:49,460 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:49,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:49,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:49,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:49,461 INFO L87 Difference]: Start difference. First operand 97 states and 242 transitions. Second operand 7 states. [2020-01-16 18:30:49,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:49,508 INFO L93 Difference]: Finished difference Result 147 states and 306 transitions. [2020-01-16 18:30:49,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:49,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:49,510 INFO L225 Difference]: With dead ends: 147 [2020-01-16 18:30:49,510 INFO L226 Difference]: Without dead ends: 140 [2020-01-16 18:30:49,511 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:49,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-01-16 18:30:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 98. [2020-01-16 18:30:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-01-16 18:30:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 243 transitions. [2020-01-16 18:30:49,516 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 243 transitions. Word has length 16 [2020-01-16 18:30:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:49,516 INFO L478 AbstractCegarLoop]: Abstraction has 98 states and 243 transitions. [2020-01-16 18:30:49,516 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:49,516 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 243 transitions. [2020-01-16 18:30:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:49,517 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:49,517 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:49,517 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:49,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:49,518 INFO L82 PathProgramCache]: Analyzing trace with hash 675778535, now seen corresponding path program 10 times [2020-01-16 18:30:49,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:49,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050049506] [2020-01-16 18:30:49,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:49,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050049506] [2020-01-16 18:30:49,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:49,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:49,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245744528] [2020-01-16 18:30:49,678 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:49,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:49,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:49,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:49,679 INFO L87 Difference]: Start difference. First operand 98 states and 243 transitions. Second operand 7 states. [2020-01-16 18:30:49,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:49,738 INFO L93 Difference]: Finished difference Result 149 states and 309 transitions. [2020-01-16 18:30:49,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:49,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:49,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:49,740 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:30:49,741 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:30:49,741 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:30:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 97. [2020-01-16 18:30:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:30:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 241 transitions. [2020-01-16 18:30:49,746 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 241 transitions. Word has length 16 [2020-01-16 18:30:49,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:49,747 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 241 transitions. [2020-01-16 18:30:49,747 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 241 transitions. [2020-01-16 18:30:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:49,748 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:49,748 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:49,748 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:49,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1732352971, now seen corresponding path program 11 times [2020-01-16 18:30:49,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:49,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521743801] [2020-01-16 18:30:49,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:49,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521743801] [2020-01-16 18:30:49,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:49,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:49,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675908452] [2020-01-16 18:30:49,921 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:49,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:49,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:49,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:49,921 INFO L87 Difference]: Start difference. First operand 97 states and 241 transitions. Second operand 7 states. [2020-01-16 18:30:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:49,972 INFO L93 Difference]: Finished difference Result 160 states and 331 transitions. [2020-01-16 18:30:49,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:49,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:49,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:49,974 INFO L225 Difference]: With dead ends: 160 [2020-01-16 18:30:49,974 INFO L226 Difference]: Without dead ends: 148 [2020-01-16 18:30:49,975 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:49,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-01-16 18:30:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 101. [2020-01-16 18:30:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-01-16 18:30:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-01-16 18:30:49,980 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 16 [2020-01-16 18:30:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:49,980 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-01-16 18:30:49,980 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-01-16 18:30:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:49,981 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:49,981 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:49,981 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:49,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1636870967, now seen corresponding path program 12 times [2020-01-16 18:30:49,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:49,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349415150] [2020-01-16 18:30:49,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:50,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349415150] [2020-01-16 18:30:50,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:50,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:50,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503585724] [2020-01-16 18:30:50,133 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:50,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:50,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:50,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:50,133 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 7 states. [2020-01-16 18:30:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:50,198 INFO L93 Difference]: Finished difference Result 157 states and 322 transitions. [2020-01-16 18:30:50,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:50,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:50,200 INFO L225 Difference]: With dead ends: 157 [2020-01-16 18:30:50,200 INFO L226 Difference]: Without dead ends: 142 [2020-01-16 18:30:50,200 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:50,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-01-16 18:30:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 95. [2020-01-16 18:30:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:30:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 236 transitions. [2020-01-16 18:30:50,205 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 236 transitions. Word has length 16 [2020-01-16 18:30:50,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:50,205 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 236 transitions. [2020-01-16 18:30:50,205 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 236 transitions. [2020-01-16 18:30:50,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:50,206 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:50,206 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:50,206 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:50,207 INFO L82 PathProgramCache]: Analyzing trace with hash -858157495, now seen corresponding path program 13 times [2020-01-16 18:30:50,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:50,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774031422] [2020-01-16 18:30:50,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:50,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774031422] [2020-01-16 18:30:50,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:50,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:50,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132790112] [2020-01-16 18:30:50,349 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:50,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:50,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:50,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:50,350 INFO L87 Difference]: Start difference. First operand 95 states and 236 transitions. Second operand 7 states. [2020-01-16 18:30:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:50,399 INFO L93 Difference]: Finished difference Result 143 states and 298 transitions. [2020-01-16 18:30:50,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:50,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:50,400 INFO L225 Difference]: With dead ends: 143 [2020-01-16 18:30:50,400 INFO L226 Difference]: Without dead ends: 136 [2020-01-16 18:30:50,401 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-01-16 18:30:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-01-16 18:30:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:30:50,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 240 transitions. [2020-01-16 18:30:50,405 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 240 transitions. Word has length 16 [2020-01-16 18:30:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:50,405 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 240 transitions. [2020-01-16 18:30:50,405 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 240 transitions. [2020-01-16 18:30:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:50,406 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:50,406 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:50,406 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash 2084314837, now seen corresponding path program 14 times [2020-01-16 18:30:50,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:50,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991018371] [2020-01-16 18:30:50,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:50,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991018371] [2020-01-16 18:30:50,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:50,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:50,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639748259] [2020-01-16 18:30:50,539 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:50,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:50,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:50,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:50,539 INFO L87 Difference]: Start difference. First operand 97 states and 240 transitions. Second operand 7 states. [2020-01-16 18:30:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:50,713 INFO L93 Difference]: Finished difference Result 146 states and 303 transitions. [2020-01-16 18:30:50,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:50,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:50,714 INFO L225 Difference]: With dead ends: 146 [2020-01-16 18:30:50,715 INFO L226 Difference]: Without dead ends: 135 [2020-01-16 18:30:50,715 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-01-16 18:30:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 96. [2020-01-16 18:30:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-01-16 18:30:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-01-16 18:30:50,720 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 16 [2020-01-16 18:30:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:50,721 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-01-16 18:30:50,722 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-01-16 18:30:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:50,723 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:50,723 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:50,723 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:50,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:50,724 INFO L82 PathProgramCache]: Analyzing trace with hash 457999809, now seen corresponding path program 15 times [2020-01-16 18:30:50,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:50,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461585767] [2020-01-16 18:30:50,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:50,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461585767] [2020-01-16 18:30:50,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:50,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:50,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464392754] [2020-01-16 18:30:50,952 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:50,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:50,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:50,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:50,953 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 7 states. [2020-01-16 18:30:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:51,013 INFO L93 Difference]: Finished difference Result 142 states and 295 transitions. [2020-01-16 18:30:51,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:51,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:51,015 INFO L225 Difference]: With dead ends: 142 [2020-01-16 18:30:51,015 INFO L226 Difference]: Without dead ends: 135 [2020-01-16 18:30:51,015 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:51,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-01-16 18:30:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 97. [2020-01-16 18:30:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:30:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-01-16 18:30:51,020 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 16 [2020-01-16 18:30:51,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:51,020 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-01-16 18:30:51,020 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-01-16 18:30:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:51,021 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:51,021 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:51,021 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:51,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:51,022 INFO L82 PathProgramCache]: Analyzing trace with hash -397306845, now seen corresponding path program 16 times [2020-01-16 18:30:51,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:51,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257226382] [2020-01-16 18:30:51,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:51,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257226382] [2020-01-16 18:30:51,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:51,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:51,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232014041] [2020-01-16 18:30:51,171 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:51,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:51,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:51,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:51,172 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 7 states. [2020-01-16 18:30:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:51,231 INFO L93 Difference]: Finished difference Result 144 states and 298 transitions. [2020-01-16 18:30:51,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:51,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:51,233 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:30:51,233 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:30:51,233 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:30:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 96. [2020-01-16 18:30:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-01-16 18:30:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 237 transitions. [2020-01-16 18:30:51,238 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 237 transitions. Word has length 16 [2020-01-16 18:30:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:51,238 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 237 transitions. [2020-01-16 18:30:51,238 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 237 transitions. [2020-01-16 18:30:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:51,239 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:51,239 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:51,239 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:51,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:51,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1339612339, now seen corresponding path program 17 times [2020-01-16 18:30:51,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:51,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298378743] [2020-01-16 18:30:51,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:51,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298378743] [2020-01-16 18:30:51,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:51,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:51,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774619478] [2020-01-16 18:30:51,374 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:51,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:51,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:51,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:51,375 INFO L87 Difference]: Start difference. First operand 96 states and 237 transitions. Second operand 7 states. [2020-01-16 18:30:51,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:51,456 INFO L93 Difference]: Finished difference Result 150 states and 312 transitions. [2020-01-16 18:30:51,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:51,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:51,457 INFO L225 Difference]: With dead ends: 150 [2020-01-16 18:30:51,458 INFO L226 Difference]: Without dead ends: 140 [2020-01-16 18:30:51,458 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:51,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-01-16 18:30:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-01-16 18:30:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-01-16 18:30:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 242 transitions. [2020-01-16 18:30:51,464 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 242 transitions. Word has length 16 [2020-01-16 18:30:51,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:51,464 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 242 transitions. [2020-01-16 18:30:51,464 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 242 transitions. [2020-01-16 18:30:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:51,465 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:51,465 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:51,465 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:51,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2087156279, now seen corresponding path program 18 times [2020-01-16 18:30:51,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:51,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551086293] [2020-01-16 18:30:51,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:51,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551086293] [2020-01-16 18:30:51,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:51,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:51,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875138326] [2020-01-16 18:30:51,665 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:51,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:51,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:51,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:51,666 INFO L87 Difference]: Start difference. First operand 99 states and 242 transitions. Second operand 7 states. [2020-01-16 18:30:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:51,742 INFO L93 Difference]: Finished difference Result 149 states and 307 transitions. [2020-01-16 18:30:51,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:51,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:51,744 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:30:51,744 INFO L226 Difference]: Without dead ends: 136 [2020-01-16 18:30:51,745 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:51,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-01-16 18:30:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 95. [2020-01-16 18:30:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:30:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 235 transitions. [2020-01-16 18:30:51,750 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 235 transitions. Word has length 16 [2020-01-16 18:30:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:51,750 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 235 transitions. [2020-01-16 18:30:51,750 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 235 transitions. [2020-01-16 18:30:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:51,751 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:51,751 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:51,752 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:51,752 INFO L82 PathProgramCache]: Analyzing trace with hash -257727173, now seen corresponding path program 19 times [2020-01-16 18:30:51,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:51,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277371479] [2020-01-16 18:30:51,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:51,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277371479] [2020-01-16 18:30:51,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:51,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:51,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633323655] [2020-01-16 18:30:51,960 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:51,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:51,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:51,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:51,962 INFO L87 Difference]: Start difference. First operand 95 states and 235 transitions. Second operand 7 states. [2020-01-16 18:30:52,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:52,009 INFO L93 Difference]: Finished difference Result 176 states and 370 transitions. [2020-01-16 18:30:52,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:52,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:52,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:52,011 INFO L225 Difference]: With dead ends: 176 [2020-01-16 18:30:52,011 INFO L226 Difference]: Without dead ends: 164 [2020-01-16 18:30:52,012 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-01-16 18:30:52,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 107. [2020-01-16 18:30:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-01-16 18:30:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 261 transitions. [2020-01-16 18:30:52,018 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 261 transitions. Word has length 16 [2020-01-16 18:30:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:52,018 INFO L478 AbstractCegarLoop]: Abstraction has 107 states and 261 transitions. [2020-01-16 18:30:52,018 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 261 transitions. [2020-01-16 18:30:52,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:52,020 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:52,020 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:52,020 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:52,020 INFO L82 PathProgramCache]: Analyzing trace with hash -255593753, now seen corresponding path program 20 times [2020-01-16 18:30:52,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:52,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997575375] [2020-01-16 18:30:52,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:52,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997575375] [2020-01-16 18:30:52,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:52,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:52,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043999279] [2020-01-16 18:30:52,192 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:52,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:52,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:52,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:52,192 INFO L87 Difference]: Start difference. First operand 107 states and 261 transitions. Second operand 7 states. [2020-01-16 18:30:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:52,261 INFO L93 Difference]: Finished difference Result 174 states and 362 transitions. [2020-01-16 18:30:52,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:52,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:52,263 INFO L225 Difference]: With dead ends: 174 [2020-01-16 18:30:52,263 INFO L226 Difference]: Without dead ends: 158 [2020-01-16 18:30:52,264 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:52,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-01-16 18:30:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 101. [2020-01-16 18:30:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-01-16 18:30:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-01-16 18:30:52,270 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 16 [2020-01-16 18:30:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:52,271 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-01-16 18:30:52,271 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-01-16 18:30:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:52,272 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:52,272 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:52,272 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:52,273 INFO L82 PathProgramCache]: Analyzing trace with hash 886628069, now seen corresponding path program 21 times [2020-01-16 18:30:52,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:52,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820994156] [2020-01-16 18:30:52,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:52,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820994156] [2020-01-16 18:30:52,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:52,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:52,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340241283] [2020-01-16 18:30:52,428 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:52,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:52,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:52,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:52,429 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 7 states. [2020-01-16 18:30:52,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:52,470 INFO L93 Difference]: Finished difference Result 173 states and 359 transitions. [2020-01-16 18:30:52,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:52,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:52,472 INFO L225 Difference]: With dead ends: 173 [2020-01-16 18:30:52,472 INFO L226 Difference]: Without dead ends: 161 [2020-01-16 18:30:52,473 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-01-16 18:30:52,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 105. [2020-01-16 18:30:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-01-16 18:30:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 253 transitions. [2020-01-16 18:30:52,478 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 253 transitions. Word has length 16 [2020-01-16 18:30:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:52,479 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 253 transitions. [2020-01-16 18:30:52,479 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:52,479 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 253 transitions. [2020-01-16 18:30:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:52,479 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:52,480 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:52,480 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:52,480 INFO L82 PathProgramCache]: Analyzing trace with hash 847649909, now seen corresponding path program 22 times [2020-01-16 18:30:52,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:52,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661368684] [2020-01-16 18:30:52,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:52,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661368684] [2020-01-16 18:30:52,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:52,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:52,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762954323] [2020-01-16 18:30:52,642 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:52,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:52,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:52,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:52,642 INFO L87 Difference]: Start difference. First operand 105 states and 253 transitions. Second operand 7 states. [2020-01-16 18:30:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:52,693 INFO L93 Difference]: Finished difference Result 170 states and 350 transitions. [2020-01-16 18:30:52,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:52,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:52,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:52,694 INFO L225 Difference]: With dead ends: 170 [2020-01-16 18:30:52,695 INFO L226 Difference]: Without dead ends: 157 [2020-01-16 18:30:52,695 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:52,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-01-16 18:30:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 101. [2020-01-16 18:30:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-01-16 18:30:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 243 transitions. [2020-01-16 18:30:52,699 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 243 transitions. Word has length 16 [2020-01-16 18:30:52,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:52,700 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 243 transitions. [2020-01-16 18:30:52,700 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:52,700 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 243 transitions. [2020-01-16 18:30:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:52,700 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:52,700 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:52,701 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:52,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1633045487, now seen corresponding path program 23 times [2020-01-16 18:30:52,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:52,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602150955] [2020-01-16 18:30:52,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:52,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602150955] [2020-01-16 18:30:52,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:52,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:52,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498952487] [2020-01-16 18:30:52,841 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:52,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:52,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:52,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:52,841 INFO L87 Difference]: Start difference. First operand 101 states and 243 transitions. Second operand 7 states. [2020-01-16 18:30:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:52,893 INFO L93 Difference]: Finished difference Result 168 states and 347 transitions. [2020-01-16 18:30:52,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:52,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:52,894 INFO L225 Difference]: With dead ends: 168 [2020-01-16 18:30:52,895 INFO L226 Difference]: Without dead ends: 158 [2020-01-16 18:30:52,895 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:52,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-01-16 18:30:52,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 104. [2020-01-16 18:30:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-01-16 18:30:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 248 transitions. [2020-01-16 18:30:52,899 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 248 transitions. Word has length 16 [2020-01-16 18:30:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:52,899 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 248 transitions. [2020-01-16 18:30:52,900 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 248 transitions. [2020-01-16 18:30:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:52,900 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:52,900 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:52,901 INFO L426 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:52,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1729568327, now seen corresponding path program 24 times [2020-01-16 18:30:52,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:52,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198090504] [2020-01-16 18:30:52,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:53,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198090504] [2020-01-16 18:30:53,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:53,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:53,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519970371] [2020-01-16 18:30:53,057 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:53,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:53,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:53,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:53,057 INFO L87 Difference]: Start difference. First operand 104 states and 248 transitions. Second operand 7 states. [2020-01-16 18:30:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:53,145 INFO L93 Difference]: Finished difference Result 167 states and 342 transitions. [2020-01-16 18:30:53,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:53,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:53,147 INFO L225 Difference]: With dead ends: 167 [2020-01-16 18:30:53,147 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:30:53,147 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:53,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:30:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2020-01-16 18:30:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:30:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 224 transitions. [2020-01-16 18:30:53,151 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 224 transitions. Word has length 16 [2020-01-16 18:30:53,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:53,152 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 224 transitions. [2020-01-16 18:30:53,152 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 224 transitions. [2020-01-16 18:30:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:53,153 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:53,153 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:53,153 INFO L426 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:53,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:53,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1892241251, now seen corresponding path program 25 times [2020-01-16 18:30:53,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:53,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140156052] [2020-01-16 18:30:53,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:53,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140156052] [2020-01-16 18:30:53,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:53,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:53,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898213624] [2020-01-16 18:30:53,321 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:53,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:53,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:53,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:53,322 INFO L87 Difference]: Start difference. First operand 91 states and 224 transitions. Second operand 7 states. [2020-01-16 18:30:53,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:53,370 INFO L93 Difference]: Finished difference Result 148 states and 301 transitions. [2020-01-16 18:30:53,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:53,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:53,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:53,372 INFO L225 Difference]: With dead ends: 148 [2020-01-16 18:30:53,372 INFO L226 Difference]: Without dead ends: 141 [2020-01-16 18:30:53,373 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-01-16 18:30:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2020-01-16 18:30:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:30:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 227 transitions. [2020-01-16 18:30:53,377 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 227 transitions. Word has length 16 [2020-01-16 18:30:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:53,377 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 227 transitions. [2020-01-16 18:30:53,378 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 227 transitions. [2020-01-16 18:30:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:53,378 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:53,378 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:53,379 INFO L426 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1348806535, now seen corresponding path program 26 times [2020-01-16 18:30:53,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:53,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829127566] [2020-01-16 18:30:53,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:53,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829127566] [2020-01-16 18:30:53,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:53,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:53,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356416441] [2020-01-16 18:30:53,538 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:53,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:53,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:53,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:53,539 INFO L87 Difference]: Start difference. First operand 93 states and 227 transitions. Second operand 7 states. [2020-01-16 18:30:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:53,583 INFO L93 Difference]: Finished difference Result 153 states and 309 transitions. [2020-01-16 18:30:53,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:53,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:53,585 INFO L225 Difference]: With dead ends: 153 [2020-01-16 18:30:53,585 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:30:53,585 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:30:53,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 91. [2020-01-16 18:30:53,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:30:53,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 222 transitions. [2020-01-16 18:30:53,589 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 222 transitions. Word has length 16 [2020-01-16 18:30:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:53,589 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 222 transitions. [2020-01-16 18:30:53,590 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:53,590 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 222 transitions. [2020-01-16 18:30:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:53,590 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:53,590 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:53,591 INFO L426 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:53,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:53,591 INFO L82 PathProgramCache]: Analyzing trace with hash -913321049, now seen corresponding path program 27 times [2020-01-16 18:30:53,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:53,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529710625] [2020-01-16 18:30:53,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:53,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529710625] [2020-01-16 18:30:53,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:53,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:53,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41562039] [2020-01-16 18:30:53,749 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:53,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:53,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:53,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:53,750 INFO L87 Difference]: Start difference. First operand 91 states and 222 transitions. Second operand 7 states. [2020-01-16 18:30:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:53,798 INFO L93 Difference]: Finished difference Result 145 states and 294 transitions. [2020-01-16 18:30:53,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:53,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:53,799 INFO L225 Difference]: With dead ends: 145 [2020-01-16 18:30:53,799 INFO L226 Difference]: Without dead ends: 138 [2020-01-16 18:30:53,800 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-01-16 18:30:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 92. [2020-01-16 18:30:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:30:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-01-16 18:30:53,804 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 16 [2020-01-16 18:30:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:53,804 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-01-16 18:30:53,804 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-01-16 18:30:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:53,805 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:53,805 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:53,806 INFO L426 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:53,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2029151283, now seen corresponding path program 28 times [2020-01-16 18:30:53,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:53,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261832385] [2020-01-16 18:30:53,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:53,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261832385] [2020-01-16 18:30:53,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:53,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:53,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518491336] [2020-01-16 18:30:53,959 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:53,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:53,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:53,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:53,960 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 7 states. [2020-01-16 18:30:54,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:54,030 INFO L93 Difference]: Finished difference Result 148 states and 299 transitions. [2020-01-16 18:30:54,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:54,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:54,032 INFO L225 Difference]: With dead ends: 148 [2020-01-16 18:30:54,032 INFO L226 Difference]: Without dead ends: 137 [2020-01-16 18:30:54,033 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-01-16 18:30:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 91. [2020-01-16 18:30:54,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:30:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-01-16 18:30:54,036 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 16 [2020-01-16 18:30:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:54,036 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-01-16 18:30:54,036 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-01-16 18:30:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:54,037 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:54,037 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:54,037 INFO L426 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:54,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:54,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1923831685, now seen corresponding path program 29 times [2020-01-16 18:30:54,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:54,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740890648] [2020-01-16 18:30:54,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:54,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740890648] [2020-01-16 18:30:54,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:54,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:54,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823109253] [2020-01-16 18:30:54,191 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:54,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:54,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:54,192 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 7 states. [2020-01-16 18:30:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:54,264 INFO L93 Difference]: Finished difference Result 160 states and 323 transitions. [2020-01-16 18:30:54,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:54,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:54,266 INFO L225 Difference]: With dead ends: 160 [2020-01-16 18:30:54,266 INFO L226 Difference]: Without dead ends: 148 [2020-01-16 18:30:54,267 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:54,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-01-16 18:30:54,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 97. [2020-01-16 18:30:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:30:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 230 transitions. [2020-01-16 18:30:54,271 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 230 transitions. Word has length 16 [2020-01-16 18:30:54,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:54,271 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 230 transitions. [2020-01-16 18:30:54,271 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:54,271 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 230 transitions. [2020-01-16 18:30:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:54,272 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:54,272 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:54,272 INFO L426 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:54,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1921698265, now seen corresponding path program 30 times [2020-01-16 18:30:54,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:54,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687212607] [2020-01-16 18:30:54,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:54,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687212607] [2020-01-16 18:30:54,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:54,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:54,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769780803] [2020-01-16 18:30:54,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:54,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:54,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:54,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:54,419 INFO L87 Difference]: Start difference. First operand 97 states and 230 transitions. Second operand 7 states. [2020-01-16 18:30:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:54,495 INFO L93 Difference]: Finished difference Result 158 states and 315 transitions. [2020-01-16 18:30:54,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:54,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:54,497 INFO L225 Difference]: With dead ends: 158 [2020-01-16 18:30:54,497 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:30:54,497 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:30:54,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 88. [2020-01-16 18:30:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:30:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 213 transitions. [2020-01-16 18:30:54,501 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 213 transitions. Word has length 16 [2020-01-16 18:30:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:54,501 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 213 transitions. [2020-01-16 18:30:54,501 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 213 transitions. [2020-01-16 18:30:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:54,502 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:54,502 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:54,502 INFO L426 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:54,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:54,503 INFO L82 PathProgramCache]: Analyzing trace with hash -224453179, now seen corresponding path program 31 times [2020-01-16 18:30:54,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:54,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290023800] [2020-01-16 18:30:54,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:54,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290023800] [2020-01-16 18:30:54,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:54,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:54,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941462867] [2020-01-16 18:30:54,658 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:54,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:54,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:54,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:54,659 INFO L87 Difference]: Start difference. First operand 88 states and 213 transitions. Second operand 7 states. [2020-01-16 18:30:54,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:54,704 INFO L93 Difference]: Finished difference Result 140 states and 281 transitions. [2020-01-16 18:30:54,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:54,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:54,705 INFO L225 Difference]: With dead ends: 140 [2020-01-16 18:30:54,705 INFO L226 Difference]: Without dead ends: 133 [2020-01-16 18:30:54,706 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-01-16 18:30:54,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2020-01-16 18:30:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:30:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 222 transitions. [2020-01-16 18:30:54,710 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 222 transitions. Word has length 16 [2020-01-16 18:30:54,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:54,711 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 222 transitions. [2020-01-16 18:30:54,711 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 222 transitions. [2020-01-16 18:30:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:54,711 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:54,711 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:54,712 INFO L426 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:54,712 INFO L82 PathProgramCache]: Analyzing trace with hash -767887895, now seen corresponding path program 32 times [2020-01-16 18:30:54,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:54,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631035607] [2020-01-16 18:30:54,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:54,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631035607] [2020-01-16 18:30:54,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:54,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:54,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125467710] [2020-01-16 18:30:54,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:54,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:54,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:54,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:54,888 INFO L87 Difference]: Start difference. First operand 92 states and 222 transitions. Second operand 7 states. [2020-01-16 18:30:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:54,933 INFO L93 Difference]: Finished difference Result 145 states and 289 transitions. [2020-01-16 18:30:54,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:54,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:54,934 INFO L225 Difference]: With dead ends: 145 [2020-01-16 18:30:54,934 INFO L226 Difference]: Without dead ends: 131 [2020-01-16 18:30:54,934 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-01-16 18:30:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 90. [2020-01-16 18:30:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:30:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 217 transitions. [2020-01-16 18:30:54,937 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 217 transitions. Word has length 16 [2020-01-16 18:30:54,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:54,937 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 217 transitions. [2020-01-16 18:30:54,937 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 217 transitions. [2020-01-16 18:30:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:54,938 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:54,938 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:54,938 INFO L426 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:54,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:54,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2009654315, now seen corresponding path program 33 times [2020-01-16 18:30:54,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:54,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569984041] [2020-01-16 18:30:54,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:55,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569984041] [2020-01-16 18:30:55,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:55,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:55,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506308032] [2020-01-16 18:30:55,099 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:55,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:55,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:55,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:55,100 INFO L87 Difference]: Start difference. First operand 90 states and 217 transitions. Second operand 7 states. [2020-01-16 18:30:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:55,161 INFO L93 Difference]: Finished difference Result 134 states and 269 transitions. [2020-01-16 18:30:55,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:55,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:55,163 INFO L225 Difference]: With dead ends: 134 [2020-01-16 18:30:55,163 INFO L226 Difference]: Without dead ends: 127 [2020-01-16 18:30:55,163 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-01-16 18:30:55,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2020-01-16 18:30:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:30:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 218 transitions. [2020-01-16 18:30:55,166 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 218 transitions. Word has length 16 [2020-01-16 18:30:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:55,167 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 218 transitions. [2020-01-16 18:30:55,167 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 218 transitions. [2020-01-16 18:30:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:55,167 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:55,167 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:55,168 INFO L426 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:55,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1438331371, now seen corresponding path program 34 times [2020-01-16 18:30:55,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:55,168 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849446113] [2020-01-16 18:30:55,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:55,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849446113] [2020-01-16 18:30:55,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:55,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:55,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729946143] [2020-01-16 18:30:55,322 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:55,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:55,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:55,323 INFO L87 Difference]: Start difference. First operand 91 states and 218 transitions. Second operand 7 states. [2020-01-16 18:30:55,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:55,381 INFO L93 Difference]: Finished difference Result 128 states and 264 transitions. [2020-01-16 18:30:55,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:55,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:55,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:55,382 INFO L225 Difference]: With dead ends: 128 [2020-01-16 18:30:55,382 INFO L226 Difference]: Without dead ends: 119 [2020-01-16 18:30:55,383 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:55,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-01-16 18:30:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 90. [2020-01-16 18:30:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:30:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 216 transitions. [2020-01-16 18:30:55,386 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 216 transitions. Word has length 16 [2020-01-16 18:30:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:55,386 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 216 transitions. [2020-01-16 18:30:55,386 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 216 transitions. [2020-01-16 18:30:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:55,387 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:55,387 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:55,387 INFO L426 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash -281261761, now seen corresponding path program 35 times [2020-01-16 18:30:55,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:55,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826070304] [2020-01-16 18:30:55,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:55,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826070304] [2020-01-16 18:30:55,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:55,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:55,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264084803] [2020-01-16 18:30:55,537 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:55,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:55,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:55,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:55,537 INFO L87 Difference]: Start difference. First operand 90 states and 216 transitions. Second operand 7 states. [2020-01-16 18:30:55,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:55,588 INFO L93 Difference]: Finished difference Result 141 states and 282 transitions. [2020-01-16 18:30:55,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:55,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:55,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:55,589 INFO L225 Difference]: With dead ends: 141 [2020-01-16 18:30:55,589 INFO L226 Difference]: Without dead ends: 129 [2020-01-16 18:30:55,590 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-01-16 18:30:55,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 93. [2020-01-16 18:30:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:30:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 220 transitions. [2020-01-16 18:30:55,595 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 220 transitions. Word has length 16 [2020-01-16 18:30:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:55,596 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 220 transitions. [2020-01-16 18:30:55,596 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 220 transitions. [2020-01-16 18:30:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:55,596 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:55,596 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:55,597 INFO L426 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:55,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1456765397, now seen corresponding path program 36 times [2020-01-16 18:30:55,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:55,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86928369] [2020-01-16 18:30:55,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:55,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86928369] [2020-01-16 18:30:55,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:55,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:55,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431741245] [2020-01-16 18:30:55,751 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:55,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:55,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:55,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:55,751 INFO L87 Difference]: Start difference. First operand 93 states and 220 transitions. Second operand 7 states. [2020-01-16 18:30:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:55,820 INFO L93 Difference]: Finished difference Result 130 states and 266 transitions. [2020-01-16 18:30:55,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:55,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:55,821 INFO L225 Difference]: With dead ends: 130 [2020-01-16 18:30:55,821 INFO L226 Difference]: Without dead ends: 117 [2020-01-16 18:30:55,821 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-01-16 18:30:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-01-16 18:30:55,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:30:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 211 transitions. [2020-01-16 18:30:55,824 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 211 transitions. Word has length 16 [2020-01-16 18:30:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:55,825 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 211 transitions. [2020-01-16 18:30:55,825 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:55,825 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 211 transitions. [2020-01-16 18:30:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:55,825 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:55,826 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:55,826 INFO L426 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:55,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:55,826 INFO L82 PathProgramCache]: Analyzing trace with hash 191866437, now seen corresponding path program 37 times [2020-01-16 18:30:55,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:55,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917765698] [2020-01-16 18:30:55,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:55,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917765698] [2020-01-16 18:30:55,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:55,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:55,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990804583] [2020-01-16 18:30:55,975 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:55,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:55,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:55,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:55,976 INFO L87 Difference]: Start difference. First operand 88 states and 211 transitions. Second operand 7 states. [2020-01-16 18:30:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:56,025 INFO L93 Difference]: Finished difference Result 133 states and 266 transitions. [2020-01-16 18:30:56,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:56,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:56,027 INFO L225 Difference]: With dead ends: 133 [2020-01-16 18:30:56,027 INFO L226 Difference]: Without dead ends: 126 [2020-01-16 18:30:56,028 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-01-16 18:30:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 90. [2020-01-16 18:30:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:30:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 215 transitions. [2020-01-16 18:30:56,031 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 215 transitions. Word has length 16 [2020-01-16 18:30:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:56,031 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 215 transitions. [2020-01-16 18:30:56,031 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 215 transitions. [2020-01-16 18:30:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:56,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:56,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:56,032 INFO L426 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:56,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:56,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1160628527, now seen corresponding path program 38 times [2020-01-16 18:30:56,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:56,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914568671] [2020-01-16 18:30:56,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:56,185 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914568671] [2020-01-16 18:30:56,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:56,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:56,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409938910] [2020-01-16 18:30:56,185 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:56,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:56,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:56,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:56,186 INFO L87 Difference]: Start difference. First operand 90 states and 215 transitions. Second operand 7 states. [2020-01-16 18:30:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:56,259 INFO L93 Difference]: Finished difference Result 136 states and 271 transitions. [2020-01-16 18:30:56,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:56,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:56,261 INFO L225 Difference]: With dead ends: 136 [2020-01-16 18:30:56,262 INFO L226 Difference]: Without dead ends: 125 [2020-01-16 18:30:56,262 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-01-16 18:30:56,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 89. [2020-01-16 18:30:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:30:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 213 transitions. [2020-01-16 18:30:56,266 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 213 transitions. Word has length 16 [2020-01-16 18:30:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:56,267 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 213 transitions. [2020-01-16 18:30:56,267 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 213 transitions. [2020-01-16 18:30:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:56,268 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:56,268 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:56,268 INFO L426 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:56,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:56,268 INFO L82 PathProgramCache]: Analyzing trace with hash 936568935, now seen corresponding path program 39 times [2020-01-16 18:30:56,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:56,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876132320] [2020-01-16 18:30:56,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:56,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876132320] [2020-01-16 18:30:56,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:56,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:56,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448785157] [2020-01-16 18:30:56,467 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:56,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:56,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:56,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:56,468 INFO L87 Difference]: Start difference. First operand 89 states and 213 transitions. Second operand 7 states. [2020-01-16 18:30:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:56,514 INFO L93 Difference]: Finished difference Result 130 states and 260 transitions. [2020-01-16 18:30:56,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:56,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:56,516 INFO L225 Difference]: With dead ends: 130 [2020-01-16 18:30:56,516 INFO L226 Difference]: Without dead ends: 123 [2020-01-16 18:30:56,516 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-01-16 18:30:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 90. [2020-01-16 18:30:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:30:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 214 transitions. [2020-01-16 18:30:56,519 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 214 transitions. Word has length 16 [2020-01-16 18:30:56,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:56,519 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 214 transitions. [2020-01-16 18:30:56,519 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:56,519 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 214 transitions. [2020-01-16 18:30:56,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:56,521 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:56,521 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:56,521 INFO L426 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:56,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1783550545, now seen corresponding path program 40 times [2020-01-16 18:30:56,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:56,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915432241] [2020-01-16 18:30:56,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:56,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915432241] [2020-01-16 18:30:56,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:56,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:56,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384565585] [2020-01-16 18:30:56,681 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:56,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:56,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:56,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:56,682 INFO L87 Difference]: Start difference. First operand 90 states and 214 transitions. Second operand 7 states. [2020-01-16 18:30:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:56,751 INFO L93 Difference]: Finished difference Result 124 states and 255 transitions. [2020-01-16 18:30:56,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:56,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:56,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:56,752 INFO L225 Difference]: With dead ends: 124 [2020-01-16 18:30:56,752 INFO L226 Difference]: Without dead ends: 115 [2020-01-16 18:30:56,753 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:56,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-01-16 18:30:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2020-01-16 18:30:56,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:30:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 212 transitions. [2020-01-16 18:30:56,756 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 212 transitions. Word has length 16 [2020-01-16 18:30:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:56,757 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 212 transitions. [2020-01-16 18:30:56,757 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 212 transitions. [2020-01-16 18:30:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:56,757 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:56,757 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:56,758 INFO L426 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:56,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:56,758 INFO L82 PathProgramCache]: Analyzing trace with hash -674002393, now seen corresponding path program 41 times [2020-01-16 18:30:56,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:56,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660536916] [2020-01-16 18:30:56,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:56,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660536916] [2020-01-16 18:30:56,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:56,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:56,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811293831] [2020-01-16 18:30:56,874 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:56,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:56,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:56,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:56,875 INFO L87 Difference]: Start difference. First operand 89 states and 212 transitions. Second operand 7 states. [2020-01-16 18:30:56,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:56,930 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-01-16 18:30:56,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:56,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:56,931 INFO L225 Difference]: With dead ends: 134 [2020-01-16 18:30:56,931 INFO L226 Difference]: Without dead ends: 124 [2020-01-16 18:30:56,932 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-01-16 18:30:56,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 91. [2020-01-16 18:30:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:30:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 215 transitions. [2020-01-16 18:30:56,935 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 215 transitions. Word has length 16 [2020-01-16 18:30:56,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:56,935 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 215 transitions. [2020-01-16 18:30:56,935 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:56,936 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 215 transitions. [2020-01-16 18:30:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:56,936 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:56,936 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:56,936 INFO L426 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:56,937 INFO L82 PathProgramCache]: Analyzing trace with hash 670167527, now seen corresponding path program 42 times [2020-01-16 18:30:56,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:56,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461695046] [2020-01-16 18:30:56,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:57,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461695046] [2020-01-16 18:30:57,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:57,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:57,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310245900] [2020-01-16 18:30:57,071 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:57,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:57,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:57,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:57,071 INFO L87 Difference]: Start difference. First operand 91 states and 215 transitions. Second operand 7 states. [2020-01-16 18:30:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:57,158 INFO L93 Difference]: Finished difference Result 125 states and 256 transitions. [2020-01-16 18:30:57,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:57,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:57,160 INFO L225 Difference]: With dead ends: 125 [2020-01-16 18:30:57,160 INFO L226 Difference]: Without dead ends: 114 [2020-01-16 18:30:57,160 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:57,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-01-16 18:30:57,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2020-01-16 18:30:57,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:30:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 210 transitions. [2020-01-16 18:30:57,165 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 210 transitions. Word has length 16 [2020-01-16 18:30:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:57,165 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 210 transitions. [2020-01-16 18:30:57,166 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:57,166 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 210 transitions. [2020-01-16 18:30:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:57,166 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:57,166 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:57,167 INFO L426 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:57,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:57,167 INFO L82 PathProgramCache]: Analyzing trace with hash 844008489, now seen corresponding path program 43 times [2020-01-16 18:30:57,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:57,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922262536] [2020-01-16 18:30:57,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:57,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922262536] [2020-01-16 18:30:57,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:57,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:57,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920373582] [2020-01-16 18:30:57,327 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:57,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:57,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:57,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:57,327 INFO L87 Difference]: Start difference. First operand 88 states and 210 transitions. Second operand 7 states. [2020-01-16 18:30:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:57,380 INFO L93 Difference]: Finished difference Result 158 states and 318 transitions. [2020-01-16 18:30:57,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:57,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:57,382 INFO L225 Difference]: With dead ends: 158 [2020-01-16 18:30:57,382 INFO L226 Difference]: Without dead ends: 146 [2020-01-16 18:30:57,383 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-01-16 18:30:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 98. [2020-01-16 18:30:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-01-16 18:30:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-01-16 18:30:57,387 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 16 [2020-01-16 18:30:57,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:57,387 INFO L478 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-01-16 18:30:57,387 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-01-16 18:30:57,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:57,388 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:57,388 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:57,388 INFO L426 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:57,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:57,388 INFO L82 PathProgramCache]: Analyzing trace with hash 846141909, now seen corresponding path program 44 times [2020-01-16 18:30:57,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:57,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5752248] [2020-01-16 18:30:57,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:57,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5752248] [2020-01-16 18:30:57,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:57,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:57,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210029898] [2020-01-16 18:30:57,539 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:57,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:57,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:57,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:57,540 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 7 states. [2020-01-16 18:30:57,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:57,600 INFO L93 Difference]: Finished difference Result 156 states and 310 transitions. [2020-01-16 18:30:57,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:57,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:57,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:57,602 INFO L225 Difference]: With dead ends: 156 [2020-01-16 18:30:57,602 INFO L226 Difference]: Without dead ends: 140 [2020-01-16 18:30:57,602 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-01-16 18:30:57,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 92. [2020-01-16 18:30:57,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:30:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 218 transitions. [2020-01-16 18:30:57,605 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 218 transitions. Word has length 16 [2020-01-16 18:30:57,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:57,605 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 218 transitions. [2020-01-16 18:30:57,606 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 218 transitions. [2020-01-16 18:30:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:57,606 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:57,606 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:57,606 INFO L426 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:57,607 INFO L82 PathProgramCache]: Analyzing trace with hash -436396951, now seen corresponding path program 45 times [2020-01-16 18:30:57,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:57,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697768489] [2020-01-16 18:30:57,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:57,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697768489] [2020-01-16 18:30:57,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:57,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:57,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039247269] [2020-01-16 18:30:57,777 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:57,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:57,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:57,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:57,778 INFO L87 Difference]: Start difference. First operand 92 states and 218 transitions. Second operand 7 states. [2020-01-16 18:30:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:57,849 INFO L93 Difference]: Finished difference Result 147 states and 293 transitions. [2020-01-16 18:30:57,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:57,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:57,850 INFO L225 Difference]: With dead ends: 147 [2020-01-16 18:30:57,850 INFO L226 Difference]: Without dead ends: 135 [2020-01-16 18:30:57,851 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-01-16 18:30:57,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 95. [2020-01-16 18:30:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:30:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 222 transitions. [2020-01-16 18:30:57,855 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 222 transitions. Word has length 16 [2020-01-16 18:30:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:57,855 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 222 transitions. [2020-01-16 18:30:57,855 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 222 transitions. [2020-01-16 18:30:57,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:57,856 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:57,856 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:57,856 INFO L426 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:57,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1611900587, now seen corresponding path program 46 times [2020-01-16 18:30:57,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:57,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290885036] [2020-01-16 18:30:57,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:57,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290885036] [2020-01-16 18:30:57,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:57,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:57,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205473277] [2020-01-16 18:30:57,993 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:57,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:57,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:57,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:57,993 INFO L87 Difference]: Start difference. First operand 95 states and 222 transitions. Second operand 7 states. [2020-01-16 18:30:58,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:58,043 INFO L93 Difference]: Finished difference Result 136 states and 277 transitions. [2020-01-16 18:30:58,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:58,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:58,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:58,044 INFO L225 Difference]: With dead ends: 136 [2020-01-16 18:30:58,044 INFO L226 Difference]: Without dead ends: 125 [2020-01-16 18:30:58,045 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:58,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-01-16 18:30:58,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 92. [2020-01-16 18:30:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:30:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 215 transitions. [2020-01-16 18:30:58,048 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 215 transitions. Word has length 16 [2020-01-16 18:30:58,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:58,048 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 215 transitions. [2020-01-16 18:30:58,048 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:58,048 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 215 transitions. [2020-01-16 18:30:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:58,049 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:58,049 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:58,049 INFO L426 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:58,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1245457199, now seen corresponding path program 47 times [2020-01-16 18:30:58,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:58,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679313165] [2020-01-16 18:30:58,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:58,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679313165] [2020-01-16 18:30:58,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:58,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:58,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712662678] [2020-01-16 18:30:58,174 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:58,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:58,174 INFO L87 Difference]: Start difference. First operand 92 states and 215 transitions. Second operand 7 states. [2020-01-16 18:30:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:58,239 INFO L93 Difference]: Finished difference Result 144 states and 285 transitions. [2020-01-16 18:30:58,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:58,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:58,241 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:30:58,241 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:30:58,242 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:30:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2020-01-16 18:30:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-01-16 18:30:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 218 transitions. [2020-01-16 18:30:58,246 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 218 transitions. Word has length 16 [2020-01-16 18:30:58,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:58,247 INFO L478 AbstractCegarLoop]: Abstraction has 94 states and 218 transitions. [2020-01-16 18:30:58,247 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 218 transitions. [2020-01-16 18:30:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:58,249 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:58,249 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:58,249 INFO L426 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:58,250 INFO L82 PathProgramCache]: Analyzing trace with hash 98712721, now seen corresponding path program 48 times [2020-01-16 18:30:58,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:58,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002676462] [2020-01-16 18:30:58,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:58,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002676462] [2020-01-16 18:30:58,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:58,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:58,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648914906] [2020-01-16 18:30:58,386 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:58,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:58,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:58,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:58,386 INFO L87 Difference]: Start difference. First operand 94 states and 218 transitions. Second operand 7 states. [2020-01-16 18:30:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:58,444 INFO L93 Difference]: Finished difference Result 135 states and 273 transitions. [2020-01-16 18:30:58,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:58,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:58,446 INFO L225 Difference]: With dead ends: 135 [2020-01-16 18:30:58,446 INFO L226 Difference]: Without dead ends: 118 [2020-01-16 18:30:58,446 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:58,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-01-16 18:30:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 85. [2020-01-16 18:30:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:30:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 202 transitions. [2020-01-16 18:30:58,450 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 202 transitions. Word has length 16 [2020-01-16 18:30:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:58,450 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 202 transitions. [2020-01-16 18:30:58,450 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 202 transitions. [2020-01-16 18:30:58,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:58,450 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:58,450 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:58,450 INFO L426 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:58,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:58,451 INFO L82 PathProgramCache]: Analyzing trace with hash -933023559, now seen corresponding path program 49 times [2020-01-16 18:30:58,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:58,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575040457] [2020-01-16 18:30:58,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:58,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575040457] [2020-01-16 18:30:58,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:58,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:58,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904642257] [2020-01-16 18:30:58,590 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:58,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:58,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:58,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:58,591 INFO L87 Difference]: Start difference. First operand 85 states and 202 transitions. Second operand 7 states. [2020-01-16 18:30:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:58,638 INFO L93 Difference]: Finished difference Result 135 states and 264 transitions. [2020-01-16 18:30:58,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:58,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:58,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:58,640 INFO L225 Difference]: With dead ends: 135 [2020-01-16 18:30:58,640 INFO L226 Difference]: Without dead ends: 128 [2020-01-16 18:30:58,640 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-01-16 18:30:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 87. [2020-01-16 18:30:58,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:30:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 205 transitions. [2020-01-16 18:30:58,645 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 205 transitions. Word has length 16 [2020-01-16 18:30:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:58,646 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 205 transitions. [2020-01-16 18:30:58,646 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 205 transitions. [2020-01-16 18:30:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:58,646 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:58,646 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:58,647 INFO L426 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:58,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1476458275, now seen corresponding path program 50 times [2020-01-16 18:30:58,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:58,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268760180] [2020-01-16 18:30:58,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:58,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268760180] [2020-01-16 18:30:58,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:58,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:58,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772007258] [2020-01-16 18:30:58,815 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:58,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:58,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:58,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:58,816 INFO L87 Difference]: Start difference. First operand 87 states and 205 transitions. Second operand 7 states. [2020-01-16 18:30:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:58,877 INFO L93 Difference]: Finished difference Result 140 states and 272 transitions. [2020-01-16 18:30:58,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:58,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:58,878 INFO L225 Difference]: With dead ends: 140 [2020-01-16 18:30:58,879 INFO L226 Difference]: Without dead ends: 126 [2020-01-16 18:30:58,879 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-01-16 18:30:58,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 85. [2020-01-16 18:30:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:30:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 200 transitions. [2020-01-16 18:30:58,882 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 200 transitions. Word has length 16 [2020-01-16 18:30:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:58,882 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 200 transitions. [2020-01-16 18:30:58,882 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 200 transitions. [2020-01-16 18:30:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:58,883 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:58,883 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:58,883 INFO L426 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:58,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1301083935, now seen corresponding path program 51 times [2020-01-16 18:30:58,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:58,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040552005] [2020-01-16 18:30:58,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:59,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040552005] [2020-01-16 18:30:59,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:59,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:59,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727535091] [2020-01-16 18:30:59,028 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:59,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:59,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:59,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:59,029 INFO L87 Difference]: Start difference. First operand 85 states and 200 transitions. Second operand 7 states. [2020-01-16 18:30:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:59,070 INFO L93 Difference]: Finished difference Result 130 states and 253 transitions. [2020-01-16 18:30:59,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:59,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:59,071 INFO L225 Difference]: With dead ends: 130 [2020-01-16 18:30:59,071 INFO L226 Difference]: Without dead ends: 123 [2020-01-16 18:30:59,071 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:59,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-01-16 18:30:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 86. [2020-01-16 18:30:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-01-16 18:30:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 201 transitions. [2020-01-16 18:30:59,074 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 201 transitions. Word has length 16 [2020-01-16 18:30:59,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:59,074 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 201 transitions. [2020-01-16 18:30:59,075 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 201 transitions. [2020-01-16 18:30:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:59,075 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:59,075 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:59,075 INFO L426 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:59,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:59,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2146901751, now seen corresponding path program 52 times [2020-01-16 18:30:59,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:59,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589908856] [2020-01-16 18:30:59,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:59,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589908856] [2020-01-16 18:30:59,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:59,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:59,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761700885] [2020-01-16 18:30:59,250 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:59,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:59,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:59,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:59,251 INFO L87 Difference]: Start difference. First operand 86 states and 201 transitions. Second operand 7 states. [2020-01-16 18:30:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:59,316 INFO L93 Difference]: Finished difference Result 131 states and 254 transitions. [2020-01-16 18:30:59,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:59,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:59,317 INFO L225 Difference]: With dead ends: 131 [2020-01-16 18:30:59,317 INFO L226 Difference]: Without dead ends: 122 [2020-01-16 18:30:59,318 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-01-16 18:30:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 85. [2020-01-16 18:30:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:30:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 199 transitions. [2020-01-16 18:30:59,321 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 199 transitions. Word has length 16 [2020-01-16 18:30:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:59,322 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 199 transitions. [2020-01-16 18:30:59,322 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 199 transitions. [2020-01-16 18:30:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:59,322 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:59,322 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:59,323 INFO L426 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:59,323 INFO L82 PathProgramCache]: Analyzing trace with hash -989832141, now seen corresponding path program 53 times [2020-01-16 18:30:59,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:59,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291268041] [2020-01-16 18:30:59,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:59,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291268041] [2020-01-16 18:30:59,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:59,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:59,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860993869] [2020-01-16 18:30:59,462 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:59,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:59,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:59,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:59,462 INFO L87 Difference]: Start difference. First operand 85 states and 199 transitions. Second operand 7 states. [2020-01-16 18:30:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:59,499 INFO L93 Difference]: Finished difference Result 142 states and 275 transitions. [2020-01-16 18:30:59,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:59,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:59,501 INFO L225 Difference]: With dead ends: 142 [2020-01-16 18:30:59,501 INFO L226 Difference]: Without dead ends: 130 [2020-01-16 18:30:59,501 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-01-16 18:30:59,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 88. [2020-01-16 18:30:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:30:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 203 transitions. [2020-01-16 18:30:59,504 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 203 transitions. Word has length 16 [2020-01-16 18:30:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:59,504 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 203 transitions. [2020-01-16 18:30:59,504 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 203 transitions. [2020-01-16 18:30:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:59,505 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:59,505 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:59,505 INFO L426 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:59,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:59,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2129631519, now seen corresponding path program 54 times [2020-01-16 18:30:59,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:59,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877354829] [2020-01-16 18:30:59,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:59,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877354829] [2020-01-16 18:30:59,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:59,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:59,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551233662] [2020-01-16 18:30:59,641 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:59,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:59,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:59,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:59,642 INFO L87 Difference]: Start difference. First operand 88 states and 203 transitions. Second operand 7 states. [2020-01-16 18:30:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:59,708 INFO L93 Difference]: Finished difference Result 138 states and 265 transitions. [2020-01-16 18:30:59,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:59,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:59,710 INFO L225 Difference]: With dead ends: 138 [2020-01-16 18:30:59,710 INFO L226 Difference]: Without dead ends: 125 [2020-01-16 18:30:59,710 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:59,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-01-16 18:30:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83. [2020-01-16 18:30:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:30:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 194 transitions. [2020-01-16 18:30:59,714 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 194 transitions. Word has length 16 [2020-01-16 18:30:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:59,714 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 194 transitions. [2020-01-16 18:30:59,714 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 194 transitions. [2020-01-16 18:30:59,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:59,715 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:59,715 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:59,715 INFO L426 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:59,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:59,716 INFO L82 PathProgramCache]: Analyzing trace with hash -397793757, now seen corresponding path program 55 times [2020-01-16 18:30:59,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:59,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287341072] [2020-01-16 18:30:59,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:59,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287341072] [2020-01-16 18:30:59,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:59,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:30:59,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675466829] [2020-01-16 18:30:59,879 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:30:59,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:59,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:30:59,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:59,880 INFO L87 Difference]: Start difference. First operand 83 states and 194 transitions. Second operand 7 states. [2020-01-16 18:30:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:59,930 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2020-01-16 18:30:59,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:30:59,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:30:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:59,932 INFO L225 Difference]: With dead ends: 133 [2020-01-16 18:30:59,933 INFO L226 Difference]: Without dead ends: 126 [2020-01-16 18:30:59,933 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:30:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-01-16 18:30:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 83. [2020-01-16 18:30:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:30:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 193 transitions. [2020-01-16 18:30:59,942 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 193 transitions. Word has length 16 [2020-01-16 18:30:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:59,942 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 193 transitions. [2020-01-16 18:30:59,942 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:30:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 193 transitions. [2020-01-16 18:30:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:30:59,942 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:59,942 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:59,943 INFO L426 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:30:59,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:59,943 INFO L82 PathProgramCache]: Analyzing trace with hash -941228473, now seen corresponding path program 56 times [2020-01-16 18:30:59,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:59,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564485356] [2020-01-16 18:30:59,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:00,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564485356] [2020-01-16 18:31:00,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:00,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:00,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527556740] [2020-01-16 18:31:00,105 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:00,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:00,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:00,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:00,105 INFO L87 Difference]: Start difference. First operand 83 states and 193 transitions. Second operand 7 states. [2020-01-16 18:31:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:00,144 INFO L93 Difference]: Finished difference Result 138 states and 265 transitions. [2020-01-16 18:31:00,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:00,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:00,145 INFO L225 Difference]: With dead ends: 138 [2020-01-16 18:31:00,145 INFO L226 Difference]: Without dead ends: 124 [2020-01-16 18:31:00,146 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-01-16 18:31:00,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 81. [2020-01-16 18:31:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:31:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 188 transitions. [2020-01-16 18:31:00,148 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 188 transitions. Word has length 16 [2020-01-16 18:31:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:00,149 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 188 transitions. [2020-01-16 18:31:00,149 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:00,149 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 188 transitions. [2020-01-16 18:31:00,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:00,149 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:00,149 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:00,149 INFO L426 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:00,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:00,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1887198753, now seen corresponding path program 57 times [2020-01-16 18:31:00,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:00,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634245445] [2020-01-16 18:31:00,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:00,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634245445] [2020-01-16 18:31:00,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:00,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:00,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285088910] [2020-01-16 18:31:00,292 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:00,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:00,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:00,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:00,292 INFO L87 Difference]: Start difference. First operand 81 states and 188 transitions. Second operand 7 states. [2020-01-16 18:31:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:00,338 INFO L93 Difference]: Finished difference Result 128 states and 247 transitions. [2020-01-16 18:31:00,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:00,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:00,340 INFO L225 Difference]: With dead ends: 128 [2020-01-16 18:31:00,340 INFO L226 Difference]: Without dead ends: 121 [2020-01-16 18:31:00,340 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-01-16 18:31:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 82. [2020-01-16 18:31:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-01-16 18:31:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 189 transitions. [2020-01-16 18:31:00,343 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 189 transitions. Word has length 16 [2020-01-16 18:31:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:00,344 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 189 transitions. [2020-01-16 18:31:00,344 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 189 transitions. [2020-01-16 18:31:00,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:00,344 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:00,344 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:00,344 INFO L426 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:00,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:00,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1552461889, now seen corresponding path program 58 times [2020-01-16 18:31:00,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:00,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013289514] [2020-01-16 18:31:00,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:00,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013289514] [2020-01-16 18:31:00,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:00,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:00,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529052514] [2020-01-16 18:31:00,497 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:00,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:00,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:00,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:00,497 INFO L87 Difference]: Start difference. First operand 82 states and 189 transitions. Second operand 7 states. [2020-01-16 18:31:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:00,559 INFO L93 Difference]: Finished difference Result 123 states and 244 transitions. [2020-01-16 18:31:00,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:00,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:00,560 INFO L225 Difference]: With dead ends: 123 [2020-01-16 18:31:00,560 INFO L226 Difference]: Without dead ends: 113 [2020-01-16 18:31:00,561 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:00,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-01-16 18:31:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 81. [2020-01-16 18:31:00,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:31:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 187 transitions. [2020-01-16 18:31:00,564 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 187 transitions. Word has length 16 [2020-01-16 18:31:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:00,564 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 187 transitions. [2020-01-16 18:31:00,564 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 187 transitions. [2020-01-16 18:31:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:00,565 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:00,565 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:00,565 INFO L426 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1685930971, now seen corresponding path program 59 times [2020-01-16 18:31:00,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:00,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486299822] [2020-01-16 18:31:00,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:00,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486299822] [2020-01-16 18:31:00,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:00,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:00,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078972] [2020-01-16 18:31:00,728 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:00,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:00,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:00,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:00,728 INFO L87 Difference]: Start difference. First operand 81 states and 187 transitions. Second operand 7 states. [2020-01-16 18:31:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:00,782 INFO L93 Difference]: Finished difference Result 136 states and 263 transitions. [2020-01-16 18:31:00,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:00,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:00,783 INFO L225 Difference]: With dead ends: 136 [2020-01-16 18:31:00,784 INFO L226 Difference]: Without dead ends: 124 [2020-01-16 18:31:00,784 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-01-16 18:31:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 85. [2020-01-16 18:31:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:31:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 193 transitions. [2020-01-16 18:31:00,787 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 193 transitions. Word has length 16 [2020-01-16 18:31:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:00,787 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 193 transitions. [2020-01-16 18:31:00,787 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 193 transitions. [2020-01-16 18:31:00,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:00,788 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:00,788 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:00,788 INFO L426 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:00,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:00,788 INFO L82 PathProgramCache]: Analyzing trace with hash -760187613, now seen corresponding path program 60 times [2020-01-16 18:31:00,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:00,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600713477] [2020-01-16 18:31:00,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:00,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600713477] [2020-01-16 18:31:00,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:00,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:00,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677219162] [2020-01-16 18:31:00,918 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:00,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:00,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:00,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:00,918 INFO L87 Difference]: Start difference. First operand 85 states and 193 transitions. Second operand 7 states. [2020-01-16 18:31:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:00,986 INFO L93 Difference]: Finished difference Result 126 states and 248 transitions. [2020-01-16 18:31:00,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:00,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:00,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:00,988 INFO L225 Difference]: With dead ends: 126 [2020-01-16 18:31:00,988 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:31:00,988 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:31:00,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 79. [2020-01-16 18:31:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:31:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 182 transitions. [2020-01-16 18:31:00,991 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 182 transitions. Word has length 16 [2020-01-16 18:31:00,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:00,991 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 182 transitions. [2020-01-16 18:31:00,991 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:00,992 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 182 transitions. [2020-01-16 18:31:00,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:00,992 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:00,992 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:00,992 INFO L426 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:00,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:00,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1920797981, now seen corresponding path program 61 times [2020-01-16 18:31:00,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:00,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881139126] [2020-01-16 18:31:00,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:01,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881139126] [2020-01-16 18:31:01,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:01,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:01,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284635233] [2020-01-16 18:31:01,152 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:01,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:01,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:01,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:01,153 INFO L87 Difference]: Start difference. First operand 79 states and 182 transitions. Second operand 7 states. [2020-01-16 18:31:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:01,207 INFO L93 Difference]: Finished difference Result 120 states and 230 transitions. [2020-01-16 18:31:01,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:01,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:01,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:01,209 INFO L225 Difference]: With dead ends: 120 [2020-01-16 18:31:01,209 INFO L226 Difference]: Without dead ends: 113 [2020-01-16 18:31:01,209 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:01,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-01-16 18:31:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 81. [2020-01-16 18:31:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:31:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 186 transitions. [2020-01-16 18:31:01,213 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 186 transitions. Word has length 16 [2020-01-16 18:31:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:01,213 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 186 transitions. [2020-01-16 18:31:01,213 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 186 transitions. [2020-01-16 18:31:01,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:01,214 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:01,214 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:01,214 INFO L426 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:01,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:01,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1073816371, now seen corresponding path program 62 times [2020-01-16 18:31:01,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:01,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528411035] [2020-01-16 18:31:01,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:01,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528411035] [2020-01-16 18:31:01,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:01,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:01,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469120674] [2020-01-16 18:31:01,356 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:01,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:01,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:01,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:01,357 INFO L87 Difference]: Start difference. First operand 81 states and 186 transitions. Second operand 7 states. [2020-01-16 18:31:01,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:01,415 INFO L93 Difference]: Finished difference Result 121 states and 231 transitions. [2020-01-16 18:31:01,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:01,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:01,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:01,417 INFO L225 Difference]: With dead ends: 121 [2020-01-16 18:31:01,417 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:31:01,418 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:31:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2020-01-16 18:31:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-01-16 18:31:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 184 transitions. [2020-01-16 18:31:01,420 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 184 transitions. Word has length 16 [2020-01-16 18:31:01,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:01,420 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 184 transitions. [2020-01-16 18:31:01,420 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 184 transitions. [2020-01-16 18:31:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:01,422 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:01,422 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:01,422 INFO L426 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:01,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1349343175, now seen corresponding path program 63 times [2020-01-16 18:31:01,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:01,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571214022] [2020-01-16 18:31:01,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:01,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571214022] [2020-01-16 18:31:01,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:01,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:01,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326038384] [2020-01-16 18:31:01,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:01,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:01,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:01,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:01,580 INFO L87 Difference]: Start difference. First operand 80 states and 184 transitions. Second operand 7 states. [2020-01-16 18:31:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:01,625 INFO L93 Difference]: Finished difference Result 119 states and 228 transitions. [2020-01-16 18:31:01,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:01,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:01,626 INFO L225 Difference]: With dead ends: 119 [2020-01-16 18:31:01,626 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:31:01,627 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:31:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 81. [2020-01-16 18:31:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:31:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 185 transitions. [2020-01-16 18:31:01,630 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 185 transitions. Word has length 16 [2020-01-16 18:31:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:01,630 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 185 transitions. [2020-01-16 18:31:01,630 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 185 transitions. [2020-01-16 18:31:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:01,631 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:01,631 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:01,631 INFO L426 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:01,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:01,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2090317467, now seen corresponding path program 64 times [2020-01-16 18:31:01,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:01,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044653928] [2020-01-16 18:31:01,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:01,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044653928] [2020-01-16 18:31:01,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:01,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:01,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608311132] [2020-01-16 18:31:01,793 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:01,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:01,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:01,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:01,794 INFO L87 Difference]: Start difference. First operand 81 states and 185 transitions. Second operand 7 states. [2020-01-16 18:31:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:01,855 INFO L93 Difference]: Finished difference Result 114 states and 225 transitions. [2020-01-16 18:31:01,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:01,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:01,856 INFO L225 Difference]: With dead ends: 114 [2020-01-16 18:31:01,856 INFO L226 Difference]: Without dead ends: 104 [2020-01-16 18:31:01,857 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:01,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-01-16 18:31:01,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 80. [2020-01-16 18:31:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-01-16 18:31:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 183 transitions. [2020-01-16 18:31:01,860 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 183 transitions. Word has length 16 [2020-01-16 18:31:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:01,860 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 183 transitions. [2020-01-16 18:31:01,860 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 183 transitions. [2020-01-16 18:31:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:01,861 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:01,861 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:01,861 INFO L426 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:01,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:01,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1818518869, now seen corresponding path program 65 times [2020-01-16 18:31:01,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:01,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976590602] [2020-01-16 18:31:01,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:02,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976590602] [2020-01-16 18:31:02,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:02,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:02,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103437933] [2020-01-16 18:31:02,006 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:02,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:02,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:02,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:02,007 INFO L87 Difference]: Start difference. First operand 80 states and 183 transitions. Second operand 7 states. [2020-01-16 18:31:02,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:02,069 INFO L93 Difference]: Finished difference Result 114 states and 226 transitions. [2020-01-16 18:31:02,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:02,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:02,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:02,070 INFO L225 Difference]: With dead ends: 114 [2020-01-16 18:31:02,070 INFO L226 Difference]: Without dead ends: 106 [2020-01-16 18:31:02,071 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:02,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-01-16 18:31:02,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2020-01-16 18:31:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-01-16 18:31:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 186 transitions. [2020-01-16 18:31:02,073 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 186 transitions. Word has length 16 [2020-01-16 18:31:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:02,073 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 186 transitions. [2020-01-16 18:31:02,073 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:02,074 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 186 transitions. [2020-01-16 18:31:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:02,074 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:02,074 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:02,074 INFO L426 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:02,075 INFO L82 PathProgramCache]: Analyzing trace with hash 3293241, now seen corresponding path program 66 times [2020-01-16 18:31:02,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:02,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494040849] [2020-01-16 18:31:02,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:02,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494040849] [2020-01-16 18:31:02,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:02,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:02,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819185974] [2020-01-16 18:31:02,226 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:02,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:02,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:02,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:02,226 INFO L87 Difference]: Start difference. First operand 82 states and 186 transitions. Second operand 7 states. [2020-01-16 18:31:02,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:02,283 INFO L93 Difference]: Finished difference Result 105 states and 215 transitions. [2020-01-16 18:31:02,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:02,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:02,286 INFO L225 Difference]: With dead ends: 105 [2020-01-16 18:31:02,286 INFO L226 Difference]: Without dead ends: 93 [2020-01-16 18:31:02,286 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:02,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-01-16 18:31:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2020-01-16 18:31:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:31:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 181 transitions. [2020-01-16 18:31:02,288 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 181 transitions. Word has length 16 [2020-01-16 18:31:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:02,288 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 181 transitions. [2020-01-16 18:31:02,289 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:02,289 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 181 transitions. [2020-01-16 18:31:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:02,289 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:02,289 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:02,289 INFO L426 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:02,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:02,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1694194197, now seen corresponding path program 67 times [2020-01-16 18:31:02,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:02,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987621670] [2020-01-16 18:31:02,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:02,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987621670] [2020-01-16 18:31:02,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:02,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:02,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769753767] [2020-01-16 18:31:02,442 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:02,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:02,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:02,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:02,442 INFO L87 Difference]: Start difference. First operand 79 states and 181 transitions. Second operand 7 states. [2020-01-16 18:31:02,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:02,481 INFO L93 Difference]: Finished difference Result 137 states and 267 transitions. [2020-01-16 18:31:02,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:02,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:02,483 INFO L225 Difference]: With dead ends: 137 [2020-01-16 18:31:02,483 INFO L226 Difference]: Without dead ends: 125 [2020-01-16 18:31:02,483 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-01-16 18:31:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 85. [2020-01-16 18:31:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:31:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 195 transitions. [2020-01-16 18:31:02,486 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 195 transitions. Word has length 16 [2020-01-16 18:31:02,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:02,486 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 195 transitions. [2020-01-16 18:31:02,486 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 195 transitions. [2020-01-16 18:31:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:02,487 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:02,487 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:02,487 INFO L426 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:02,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:02,487 INFO L82 PathProgramCache]: Analyzing trace with hash 518690561, now seen corresponding path program 68 times [2020-01-16 18:31:02,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:02,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100230691] [2020-01-16 18:31:02,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:02,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100230691] [2020-01-16 18:31:02,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:02,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:02,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179208189] [2020-01-16 18:31:02,636 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:02,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:02,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:02,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:02,636 INFO L87 Difference]: Start difference. First operand 85 states and 195 transitions. Second operand 7 states. [2020-01-16 18:31:02,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:02,693 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2020-01-16 18:31:02,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:02,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:02,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:02,695 INFO L225 Difference]: With dead ends: 133 [2020-01-16 18:31:02,695 INFO L226 Difference]: Without dead ends: 122 [2020-01-16 18:31:02,695 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-01-16 18:31:02,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 82. [2020-01-16 18:31:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-01-16 18:31:02,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 188 transitions. [2020-01-16 18:31:02,699 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 188 transitions. Word has length 16 [2020-01-16 18:31:02,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:02,699 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 188 transitions. [2020-01-16 18:31:02,699 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:02,699 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 188 transitions. [2020-01-16 18:31:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:02,700 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:02,700 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:02,700 INFO L426 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:02,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:02,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1959172537, now seen corresponding path program 69 times [2020-01-16 18:31:02,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:02,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355905406] [2020-01-16 18:31:02,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:02,854 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355905406] [2020-01-16 18:31:02,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:02,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:02,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624400193] [2020-01-16 18:31:02,855 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:02,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:02,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:02,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:02,856 INFO L87 Difference]: Start difference. First operand 82 states and 188 transitions. Second operand 7 states. [2020-01-16 18:31:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:02,909 INFO L93 Difference]: Finished difference Result 129 states and 249 transitions. [2020-01-16 18:31:02,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:02,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:02,911 INFO L225 Difference]: With dead ends: 129 [2020-01-16 18:31:02,911 INFO L226 Difference]: Without dead ends: 117 [2020-01-16 18:31:02,911 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-01-16 18:31:02,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 86. [2020-01-16 18:31:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-01-16 18:31:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 194 transitions. [2020-01-16 18:31:02,914 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 194 transitions. Word has length 16 [2020-01-16 18:31:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:02,915 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 194 transitions. [2020-01-16 18:31:02,915 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 194 transitions. [2020-01-16 18:31:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:02,915 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:02,915 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:02,915 INFO L426 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:02,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:02,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1440320653, now seen corresponding path program 70 times [2020-01-16 18:31:02,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:02,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815931180] [2020-01-16 18:31:02,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:03,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815931180] [2020-01-16 18:31:03,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:03,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:03,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711197905] [2020-01-16 18:31:03,073 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:03,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:03,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:03,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:03,073 INFO L87 Difference]: Start difference. First operand 86 states and 194 transitions. Second operand 7 states. [2020-01-16 18:31:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:03,132 INFO L93 Difference]: Finished difference Result 119 states and 234 transitions. [2020-01-16 18:31:03,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:03,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:03,133 INFO L225 Difference]: With dead ends: 119 [2020-01-16 18:31:03,133 INFO L226 Difference]: Without dead ends: 106 [2020-01-16 18:31:03,134 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-01-16 18:31:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2020-01-16 18:31:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-01-16 18:31:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 185 transitions. [2020-01-16 18:31:03,136 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 185 transitions. Word has length 16 [2020-01-16 18:31:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:03,136 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 185 transitions. [2020-01-16 18:31:03,136 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 185 transitions. [2020-01-16 18:31:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:03,136 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:03,137 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:03,137 INFO L426 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:03,137 INFO L82 PathProgramCache]: Analyzing trace with hash -568756211, now seen corresponding path program 71 times [2020-01-16 18:31:03,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:03,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516235323] [2020-01-16 18:31:03,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:03,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516235323] [2020-01-16 18:31:03,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:03,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:03,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867608659] [2020-01-16 18:31:03,279 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:03,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:03,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:03,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:03,280 INFO L87 Difference]: Start difference. First operand 82 states and 185 transitions. Second operand 7 states. [2020-01-16 18:31:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:03,347 INFO L93 Difference]: Finished difference Result 116 states and 228 transitions. [2020-01-16 18:31:03,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:03,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:03,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:03,349 INFO L225 Difference]: With dead ends: 116 [2020-01-16 18:31:03,349 INFO L226 Difference]: Without dead ends: 108 [2020-01-16 18:31:03,349 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-01-16 18:31:03,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-01-16 18:31:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-01-16 18:31:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 188 transitions. [2020-01-16 18:31:03,353 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 188 transitions. Word has length 16 [2020-01-16 18:31:03,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:03,353 INFO L478 AbstractCegarLoop]: Abstraction has 84 states and 188 transitions. [2020-01-16 18:31:03,353 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:03,353 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 188 transitions. [2020-01-16 18:31:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:03,353 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:03,354 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:03,354 INFO L426 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:03,354 INFO L82 PathProgramCache]: Analyzing trace with hash -568161565, now seen corresponding path program 72 times [2020-01-16 18:31:03,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:03,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245095980] [2020-01-16 18:31:03,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:03,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245095980] [2020-01-16 18:31:03,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:03,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:03,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606490850] [2020-01-16 18:31:03,493 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:03,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:03,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:03,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:03,493 INFO L87 Difference]: Start difference. First operand 84 states and 188 transitions. Second operand 7 states. [2020-01-16 18:31:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:03,549 INFO L93 Difference]: Finished difference Result 107 states and 217 transitions. [2020-01-16 18:31:03,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:03,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:03,550 INFO L225 Difference]: With dead ends: 107 [2020-01-16 18:31:03,550 INFO L226 Difference]: Without dead ends: 91 [2020-01-16 18:31:03,550 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-01-16 18:31:03,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 77. [2020-01-16 18:31:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-01-16 18:31:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 176 transitions. [2020-01-16 18:31:03,552 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 176 transitions. Word has length 16 [2020-01-16 18:31:03,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:03,553 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 176 transitions. [2020-01-16 18:31:03,553 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 176 transitions. [2020-01-16 18:31:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:03,553 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:03,554 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:03,554 INFO L426 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:03,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:03,554 INFO L82 PathProgramCache]: Analyzing trace with hash 577387645, now seen corresponding path program 73 times [2020-01-16 18:31:03,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:03,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959837038] [2020-01-16 18:31:03,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:03,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959837038] [2020-01-16 18:31:03,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:03,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:03,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267755744] [2020-01-16 18:31:03,706 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:03,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:03,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:03,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:03,706 INFO L87 Difference]: Start difference. First operand 77 states and 176 transitions. Second operand 7 states. [2020-01-16 18:31:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:03,759 INFO L93 Difference]: Finished difference Result 119 states and 225 transitions. [2020-01-16 18:31:03,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:03,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:03,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:03,761 INFO L225 Difference]: With dead ends: 119 [2020-01-16 18:31:03,761 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:31:03,761 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:31:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 78. [2020-01-16 18:31:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-01-16 18:31:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 177 transitions. [2020-01-16 18:31:03,764 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 177 transitions. Word has length 16 [2020-01-16 18:31:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:03,765 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 177 transitions. [2020-01-16 18:31:03,765 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 177 transitions. [2020-01-16 18:31:03,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:03,765 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:03,765 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:03,766 INFO L426 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:03,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:03,766 INFO L82 PathProgramCache]: Analyzing trace with hash -775107319, now seen corresponding path program 74 times [2020-01-16 18:31:03,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:03,766 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563647549] [2020-01-16 18:31:03,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:03,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563647549] [2020-01-16 18:31:03,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:03,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:03,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921902943] [2020-01-16 18:31:03,919 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:03,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:03,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:03,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:03,921 INFO L87 Difference]: Start difference. First operand 78 states and 177 transitions. Second operand 7 states. [2020-01-16 18:31:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:04,000 INFO L93 Difference]: Finished difference Result 122 states and 230 transitions. [2020-01-16 18:31:04,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:04,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:04,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:04,002 INFO L225 Difference]: With dead ends: 122 [2020-01-16 18:31:04,002 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:31:04,002 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:31:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 77. [2020-01-16 18:31:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-01-16 18:31:04,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 175 transitions. [2020-01-16 18:31:04,005 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 175 transitions. Word has length 16 [2020-01-16 18:31:04,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:04,005 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 175 transitions. [2020-01-16 18:31:04,005 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 175 transitions. [2020-01-16 18:31:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:04,006 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:04,006 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:04,006 INFO L426 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1322090143, now seen corresponding path program 75 times [2020-01-16 18:31:04,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:04,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148264530] [2020-01-16 18:31:04,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:04,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148264530] [2020-01-16 18:31:04,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:04,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:04,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185300976] [2020-01-16 18:31:04,171 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:04,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:04,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:04,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:04,172 INFO L87 Difference]: Start difference. First operand 77 states and 175 transitions. Second operand 7 states. [2020-01-16 18:31:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:04,233 INFO L93 Difference]: Finished difference Result 117 states and 220 transitions. [2020-01-16 18:31:04,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:04,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:04,234 INFO L225 Difference]: With dead ends: 117 [2020-01-16 18:31:04,234 INFO L226 Difference]: Without dead ends: 110 [2020-01-16 18:31:04,234 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-01-16 18:31:04,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 78. [2020-01-16 18:31:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-01-16 18:31:04,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 176 transitions. [2020-01-16 18:31:04,236 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 176 transitions. Word has length 16 [2020-01-16 18:31:04,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:04,236 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 176 transitions. [2020-01-16 18:31:04,236 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:04,236 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 176 transitions. [2020-01-16 18:31:04,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:04,237 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:04,237 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:04,237 INFO L426 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:04,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:04,237 INFO L82 PathProgramCache]: Analyzing trace with hash -2125895543, now seen corresponding path program 76 times [2020-01-16 18:31:04,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:04,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914177862] [2020-01-16 18:31:04,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:04,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914177862] [2020-01-16 18:31:04,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:04,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:04,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727187025] [2020-01-16 18:31:04,395 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:04,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:04,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:04,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:04,396 INFO L87 Difference]: Start difference. First operand 78 states and 176 transitions. Second operand 7 states. [2020-01-16 18:31:04,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:04,488 INFO L93 Difference]: Finished difference Result 118 states and 221 transitions. [2020-01-16 18:31:04,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:04,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:04,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:04,490 INFO L225 Difference]: With dead ends: 118 [2020-01-16 18:31:04,490 INFO L226 Difference]: Without dead ends: 109 [2020-01-16 18:31:04,490 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-01-16 18:31:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 77. [2020-01-16 18:31:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-01-16 18:31:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 174 transitions. [2020-01-16 18:31:04,493 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 174 transitions. Word has length 16 [2020-01-16 18:31:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:04,493 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 174 transitions. [2020-01-16 18:31:04,493 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 174 transitions. [2020-01-16 18:31:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:04,494 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:04,494 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:04,494 INFO L426 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash -288481185, now seen corresponding path program 77 times [2020-01-16 18:31:04,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:04,495 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794909885] [2020-01-16 18:31:04,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:04,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794909885] [2020-01-16 18:31:04,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:04,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:04,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286888006] [2020-01-16 18:31:04,638 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:04,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:04,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:04,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:04,639 INFO L87 Difference]: Start difference. First operand 77 states and 174 transitions. Second operand 7 states. [2020-01-16 18:31:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:04,695 INFO L93 Difference]: Finished difference Result 124 states and 234 transitions. [2020-01-16 18:31:04,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:04,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:04,698 INFO L225 Difference]: With dead ends: 124 [2020-01-16 18:31:04,698 INFO L226 Difference]: Without dead ends: 114 [2020-01-16 18:31:04,698 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:04,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-01-16 18:31:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 79. [2020-01-16 18:31:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:31:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 177 transitions. [2020-01-16 18:31:04,701 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 177 transitions. Word has length 16 [2020-01-16 18:31:04,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:04,701 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 177 transitions. [2020-01-16 18:31:04,702 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 177 transitions. [2020-01-16 18:31:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:04,702 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:04,702 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:04,702 INFO L426 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:04,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1055688735, now seen corresponding path program 78 times [2020-01-16 18:31:04,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:04,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505983271] [2020-01-16 18:31:04,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:04,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505983271] [2020-01-16 18:31:04,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:04,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:04,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215197871] [2020-01-16 18:31:04,823 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:04,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:04,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:04,824 INFO L87 Difference]: Start difference. First operand 79 states and 177 transitions. Second operand 7 states. [2020-01-16 18:31:04,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:04,888 INFO L93 Difference]: Finished difference Result 122 states and 228 transitions. [2020-01-16 18:31:04,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:04,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:04,889 INFO L225 Difference]: With dead ends: 122 [2020-01-16 18:31:04,889 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:31:04,890 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:31:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 76. [2020-01-16 18:31:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-01-16 18:31:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 172 transitions. [2020-01-16 18:31:04,893 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 172 transitions. Word has length 16 [2020-01-16 18:31:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:04,893 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 172 transitions. [2020-01-16 18:31:04,893 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:04,893 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 172 transitions. [2020-01-16 18:31:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:04,893 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:04,894 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:04,894 INFO L426 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:04,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:04,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1112617447, now seen corresponding path program 79 times [2020-01-16 18:31:04,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:04,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948771038] [2020-01-16 18:31:04,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:05,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948771038] [2020-01-16 18:31:05,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:05,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:05,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727629897] [2020-01-16 18:31:05,042 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:05,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:05,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:05,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:05,043 INFO L87 Difference]: Start difference. First operand 76 states and 172 transitions. Second operand 7 states. [2020-01-16 18:31:05,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:05,087 INFO L93 Difference]: Finished difference Result 119 states and 224 transitions. [2020-01-16 18:31:05,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:05,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:05,089 INFO L225 Difference]: With dead ends: 119 [2020-01-16 18:31:05,089 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:31:05,089 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:31:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2020-01-16 18:31:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-01-16 18:31:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 171 transitions. [2020-01-16 18:31:05,092 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 171 transitions. Word has length 16 [2020-01-16 18:31:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:05,092 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 171 transitions. [2020-01-16 18:31:05,092 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:05,092 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 171 transitions. [2020-01-16 18:31:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:05,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:05,093 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:05,093 INFO L426 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash -239877517, now seen corresponding path program 80 times [2020-01-16 18:31:05,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:05,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326150272] [2020-01-16 18:31:05,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:05,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326150272] [2020-01-16 18:31:05,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:05,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:05,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635274059] [2020-01-16 18:31:05,244 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:05,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:05,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:05,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:05,244 INFO L87 Difference]: Start difference. First operand 76 states and 171 transitions. Second operand 7 states. [2020-01-16 18:31:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:05,302 INFO L93 Difference]: Finished difference Result 122 states and 229 transitions. [2020-01-16 18:31:05,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:05,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:05,303 INFO L225 Difference]: With dead ends: 122 [2020-01-16 18:31:05,303 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:31:05,304 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:31:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 75. [2020-01-16 18:31:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:31:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 169 transitions. [2020-01-16 18:31:05,306 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 169 transitions. Word has length 16 [2020-01-16 18:31:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:05,306 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 169 transitions. [2020-01-16 18:31:05,306 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 169 transitions. [2020-01-16 18:31:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:05,307 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:05,307 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:05,307 INFO L426 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:05,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:05,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1866192545, now seen corresponding path program 81 times [2020-01-16 18:31:05,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:05,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595110957] [2020-01-16 18:31:05,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:05,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595110957] [2020-01-16 18:31:05,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:05,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:05,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594425199] [2020-01-16 18:31:05,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:05,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:05,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:05,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:05,455 INFO L87 Difference]: Start difference. First operand 75 states and 169 transitions. Second operand 7 states. [2020-01-16 18:31:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:05,500 INFO L93 Difference]: Finished difference Result 117 states and 220 transitions. [2020-01-16 18:31:05,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:05,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:05,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:05,501 INFO L225 Difference]: With dead ends: 117 [2020-01-16 18:31:05,502 INFO L226 Difference]: Without dead ends: 110 [2020-01-16 18:31:05,502 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:05,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-01-16 18:31:05,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2020-01-16 18:31:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-01-16 18:31:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 170 transitions. [2020-01-16 18:31:05,505 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 170 transitions. Word has length 16 [2020-01-16 18:31:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:05,506 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 170 transitions. [2020-01-16 18:31:05,506 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 170 transitions. [2020-01-16 18:31:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:05,506 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:05,506 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:05,507 INFO L426 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:05,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1573468097, now seen corresponding path program 82 times [2020-01-16 18:31:05,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:05,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547419634] [2020-01-16 18:31:05,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:05,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547419634] [2020-01-16 18:31:05,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:05,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:05,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069079330] [2020-01-16 18:31:05,663 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:05,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:05,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:05,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:05,664 INFO L87 Difference]: Start difference. First operand 76 states and 170 transitions. Second operand 7 states. [2020-01-16 18:31:05,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:05,732 INFO L93 Difference]: Finished difference Result 112 states and 217 transitions. [2020-01-16 18:31:05,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:05,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:05,734 INFO L225 Difference]: With dead ends: 112 [2020-01-16 18:31:05,734 INFO L226 Difference]: Without dead ends: 102 [2020-01-16 18:31:05,734 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-01-16 18:31:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 75. [2020-01-16 18:31:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:31:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 168 transitions. [2020-01-16 18:31:05,737 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 168 transitions. Word has length 16 [2020-01-16 18:31:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:05,737 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 168 transitions. [2020-01-16 18:31:05,737 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 168 transitions. [2020-01-16 18:31:05,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:05,738 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:05,738 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:05,738 INFO L426 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:05,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:05,738 INFO L82 PathProgramCache]: Analyzing trace with hash -984580015, now seen corresponding path program 83 times [2020-01-16 18:31:05,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:05,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872273351] [2020-01-16 18:31:05,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:05,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872273351] [2020-01-16 18:31:05,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:05,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:05,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414877440] [2020-01-16 18:31:05,890 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:05,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:05,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:05,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:05,891 INFO L87 Difference]: Start difference. First operand 75 states and 168 transitions. Second operand 7 states. [2020-01-16 18:31:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:05,939 INFO L93 Difference]: Finished difference Result 122 states and 231 transitions. [2020-01-16 18:31:05,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:05,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:05,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:05,941 INFO L225 Difference]: With dead ends: 122 [2020-01-16 18:31:05,941 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:31:05,941 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:31:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 78. [2020-01-16 18:31:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-01-16 18:31:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 173 transitions. [2020-01-16 18:31:05,943 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 173 transitions. Word has length 16 [2020-01-16 18:31:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:05,944 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 173 transitions. [2020-01-16 18:31:05,944 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 173 transitions. [2020-01-16 18:31:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:05,944 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:05,944 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:05,944 INFO L426 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:05,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:05,945 INFO L82 PathProgramCache]: Analyzing trace with hash -116381337, now seen corresponding path program 84 times [2020-01-16 18:31:05,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:05,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268042914] [2020-01-16 18:31:05,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:06,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268042914] [2020-01-16 18:31:06,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:06,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:06,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419386963] [2020-01-16 18:31:06,089 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:06,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:06,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:06,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:06,089 INFO L87 Difference]: Start difference. First operand 78 states and 173 transitions. Second operand 7 states. [2020-01-16 18:31:06,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:06,149 INFO L93 Difference]: Finished difference Result 114 states and 220 transitions. [2020-01-16 18:31:06,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:06,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:06,151 INFO L225 Difference]: With dead ends: 114 [2020-01-16 18:31:06,151 INFO L226 Difference]: Without dead ends: 101 [2020-01-16 18:31:06,151 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-01-16 18:31:06,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2020-01-16 18:31:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-01-16 18:31:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 166 transitions. [2020-01-16 18:31:06,154 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 166 transitions. Word has length 16 [2020-01-16 18:31:06,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:06,154 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 166 transitions. [2020-01-16 18:31:06,154 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 166 transitions. [2020-01-16 18:31:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:06,154 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:06,154 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:06,154 INFO L426 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:06,155 INFO L82 PathProgramCache]: Analyzing trace with hash -826706393, now seen corresponding path program 85 times [2020-01-16 18:31:06,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:06,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592176225] [2020-01-16 18:31:06,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:06,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592176225] [2020-01-16 18:31:06,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:06,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:06,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619573424] [2020-01-16 18:31:06,327 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:06,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:06,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:06,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:06,327 INFO L87 Difference]: Start difference. First operand 74 states and 166 transitions. Second operand 7 states. [2020-01-16 18:31:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:06,369 INFO L93 Difference]: Finished difference Result 111 states and 206 transitions. [2020-01-16 18:31:06,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:06,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:06,371 INFO L225 Difference]: With dead ends: 111 [2020-01-16 18:31:06,371 INFO L226 Difference]: Without dead ends: 104 [2020-01-16 18:31:06,371 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-01-16 18:31:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 74. [2020-01-16 18:31:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-01-16 18:31:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 165 transitions. [2020-01-16 18:31:06,374 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 165 transitions. Word has length 16 [2020-01-16 18:31:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:06,374 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 165 transitions. [2020-01-16 18:31:06,375 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 165 transitions. [2020-01-16 18:31:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:06,375 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:06,375 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:06,375 INFO L426 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:06,375 INFO L82 PathProgramCache]: Analyzing trace with hash 20275217, now seen corresponding path program 86 times [2020-01-16 18:31:06,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:06,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398429866] [2020-01-16 18:31:06,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:06,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398429866] [2020-01-16 18:31:06,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:06,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:06,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168199202] [2020-01-16 18:31:06,539 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:06,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:06,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:06,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:06,540 INFO L87 Difference]: Start difference. First operand 74 states and 165 transitions. Second operand 7 states. [2020-01-16 18:31:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:06,598 INFO L93 Difference]: Finished difference Result 112 states and 207 transitions. [2020-01-16 18:31:06,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:06,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:06,600 INFO L225 Difference]: With dead ends: 112 [2020-01-16 18:31:06,600 INFO L226 Difference]: Without dead ends: 103 [2020-01-16 18:31:06,600 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-01-16 18:31:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 73. [2020-01-16 18:31:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-01-16 18:31:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 163 transitions. [2020-01-16 18:31:06,603 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 163 transitions. Word has length 16 [2020-01-16 18:31:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:06,603 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 163 transitions. [2020-01-16 18:31:06,603 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 163 transitions. [2020-01-16 18:31:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:06,604 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:06,604 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:06,604 INFO L426 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash -255251587, now seen corresponding path program 87 times [2020-01-16 18:31:06,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:06,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134006893] [2020-01-16 18:31:06,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:06,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134006893] [2020-01-16 18:31:06,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:06,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:06,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519604187] [2020-01-16 18:31:06,791 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:06,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:06,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:06,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:06,792 INFO L87 Difference]: Start difference. First operand 73 states and 163 transitions. Second operand 7 states. [2020-01-16 18:31:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:06,836 INFO L93 Difference]: Finished difference Result 110 states and 204 transitions. [2020-01-16 18:31:06,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:06,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:06,837 INFO L225 Difference]: With dead ends: 110 [2020-01-16 18:31:06,837 INFO L226 Difference]: Without dead ends: 103 [2020-01-16 18:31:06,838 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-01-16 18:31:06,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-01-16 18:31:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-01-16 18:31:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 161 transitions. [2020-01-16 18:31:06,840 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 161 transitions. Word has length 16 [2020-01-16 18:31:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:06,841 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 161 transitions. [2020-01-16 18:31:06,841 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 161 transitions. [2020-01-16 18:31:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:06,841 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:06,841 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:06,841 INFO L426 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:06,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1110558241, now seen corresponding path program 88 times [2020-01-16 18:31:06,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:06,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873815078] [2020-01-16 18:31:06,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:06,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873815078] [2020-01-16 18:31:06,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:06,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:06,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424716006] [2020-01-16 18:31:06,996 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:06,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:06,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:06,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:06,997 INFO L87 Difference]: Start difference. First operand 72 states and 161 transitions. Second operand 7 states. [2020-01-16 18:31:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:07,061 INFO L93 Difference]: Finished difference Result 105 states and 201 transitions. [2020-01-16 18:31:07,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:07,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:07,062 INFO L225 Difference]: With dead ends: 105 [2020-01-16 18:31:07,062 INFO L226 Difference]: Without dead ends: 95 [2020-01-16 18:31:07,063 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-01-16 18:31:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 71. [2020-01-16 18:31:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-01-16 18:31:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 159 transitions. [2020-01-16 18:31:07,065 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 159 transitions. Word has length 16 [2020-01-16 18:31:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:07,066 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 159 transitions. [2020-01-16 18:31:07,066 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 159 transitions. [2020-01-16 18:31:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:07,066 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:07,067 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:07,067 INFO L426 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:07,067 INFO L82 PathProgramCache]: Analyzing trace with hash -724427281, now seen corresponding path program 89 times [2020-01-16 18:31:07,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:07,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163930915] [2020-01-16 18:31:07,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:07,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163930915] [2020-01-16 18:31:07,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:07,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:07,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214192956] [2020-01-16 18:31:07,228 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:07,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:07,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:07,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:07,229 INFO L87 Difference]: Start difference. First operand 71 states and 159 transitions. Second operand 7 states. [2020-01-16 18:31:07,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:07,286 INFO L93 Difference]: Finished difference Result 105 states and 202 transitions. [2020-01-16 18:31:07,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:07,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:07,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:07,287 INFO L225 Difference]: With dead ends: 105 [2020-01-16 18:31:07,287 INFO L226 Difference]: Without dead ends: 97 [2020-01-16 18:31:07,288 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-01-16 18:31:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 73. [2020-01-16 18:31:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-01-16 18:31:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 162 transitions. [2020-01-16 18:31:07,290 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 162 transitions. Word has length 16 [2020-01-16 18:31:07,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:07,291 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 162 transitions. [2020-01-16 18:31:07,291 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 162 transitions. [2020-01-16 18:31:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:07,291 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:07,292 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:07,292 INFO L426 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:07,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1097384829, now seen corresponding path program 90 times [2020-01-16 18:31:07,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:07,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917998963] [2020-01-16 18:31:07,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:07,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917998963] [2020-01-16 18:31:07,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:07,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:07,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879331506] [2020-01-16 18:31:07,443 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:07,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:07,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:07,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:07,444 INFO L87 Difference]: Start difference. First operand 73 states and 162 transitions. Second operand 7 states. [2020-01-16 18:31:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:07,499 INFO L93 Difference]: Finished difference Result 96 states and 191 transitions. [2020-01-16 18:31:07,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:07,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:07,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:07,500 INFO L225 Difference]: With dead ends: 96 [2020-01-16 18:31:07,500 INFO L226 Difference]: Without dead ends: 84 [2020-01-16 18:31:07,501 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-01-16 18:31:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 70. [2020-01-16 18:31:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-01-16 18:31:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 157 transitions. [2020-01-16 18:31:07,503 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 157 transitions. Word has length 16 [2020-01-16 18:31:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:07,504 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 157 transitions. [2020-01-16 18:31:07,504 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 157 transitions. [2020-01-16 18:31:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:07,504 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:07,504 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:07,504 INFO L426 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:07,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1899422143, now seen corresponding path program 91 times [2020-01-16 18:31:07,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:07,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479003425] [2020-01-16 18:31:07,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:07,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479003425] [2020-01-16 18:31:07,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:07,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:07,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904950374] [2020-01-16 18:31:07,637 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:07,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:07,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:07,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:07,638 INFO L87 Difference]: Start difference. First operand 70 states and 157 transitions. Second operand 7 states. [2020-01-16 18:31:07,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:07,684 INFO L93 Difference]: Finished difference Result 112 states and 221 transitions. [2020-01-16 18:31:07,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:07,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:07,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:07,685 INFO L225 Difference]: With dead ends: 112 [2020-01-16 18:31:07,685 INFO L226 Difference]: Without dead ends: 102 [2020-01-16 18:31:07,685 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:07,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-01-16 18:31:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2020-01-16 18:31:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-01-16 18:31:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 167 transitions. [2020-01-16 18:31:07,687 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 167 transitions. Word has length 16 [2020-01-16 18:31:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:07,688 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 167 transitions. [2020-01-16 18:31:07,688 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 167 transitions. [2020-01-16 18:31:07,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:07,688 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:07,688 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:07,688 INFO L426 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:07,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:07,689 INFO L82 PathProgramCache]: Analyzing trace with hash -555252223, now seen corresponding path program 92 times [2020-01-16 18:31:07,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:07,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900776110] [2020-01-16 18:31:07,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:07,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900776110] [2020-01-16 18:31:07,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:07,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:07,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664425154] [2020-01-16 18:31:07,825 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:07,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:07,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:07,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:07,826 INFO L87 Difference]: Start difference. First operand 74 states and 167 transitions. Second operand 7 states. [2020-01-16 18:31:07,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:07,899 INFO L93 Difference]: Finished difference Result 110 states and 215 transitions. [2020-01-16 18:31:07,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:07,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:07,901 INFO L225 Difference]: With dead ends: 110 [2020-01-16 18:31:07,901 INFO L226 Difference]: Without dead ends: 100 [2020-01-16 18:31:07,901 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:07,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-01-16 18:31:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 72. [2020-01-16 18:31:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-01-16 18:31:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 162 transitions. [2020-01-16 18:31:07,905 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 162 transitions. Word has length 16 [2020-01-16 18:31:07,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:07,905 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 162 transitions. [2020-01-16 18:31:07,906 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:07,906 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 162 transitions. [2020-01-16 18:31:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:07,906 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:07,907 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:07,907 INFO L426 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:07,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:07,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1257821581, now seen corresponding path program 93 times [2020-01-16 18:31:07,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:07,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068278643] [2020-01-16 18:31:07,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:08,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068278643] [2020-01-16 18:31:08,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:08,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:08,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467803033] [2020-01-16 18:31:08,088 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:08,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:08,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:08,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:08,089 INFO L87 Difference]: Start difference. First operand 72 states and 162 transitions. Second operand 7 states. [2020-01-16 18:31:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:08,160 INFO L93 Difference]: Finished difference Result 106 states and 207 transitions. [2020-01-16 18:31:08,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:08,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:08,162 INFO L225 Difference]: With dead ends: 106 [2020-01-16 18:31:08,162 INFO L226 Difference]: Without dead ends: 96 [2020-01-16 18:31:08,162 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-01-16 18:31:08,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2020-01-16 18:31:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:31:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 167 transitions. [2020-01-16 18:31:08,166 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 167 transitions. Word has length 16 [2020-01-16 18:31:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:08,167 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 167 transitions. [2020-01-16 18:31:08,168 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 167 transitions. [2020-01-16 18:31:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:08,168 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:08,169 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:08,169 INFO L426 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:08,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2084126929, now seen corresponding path program 94 times [2020-01-16 18:31:08,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:08,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306171239] [2020-01-16 18:31:08,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:08,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306171239] [2020-01-16 18:31:08,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:08,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:08,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638228614] [2020-01-16 18:31:08,373 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:08,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:08,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:08,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:08,374 INFO L87 Difference]: Start difference. First operand 75 states and 167 transitions. Second operand 7 states. [2020-01-16 18:31:08,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:08,466 INFO L93 Difference]: Finished difference Result 98 states and 196 transitions. [2020-01-16 18:31:08,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:08,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:08,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:08,468 INFO L225 Difference]: With dead ends: 98 [2020-01-16 18:31:08,468 INFO L226 Difference]: Without dead ends: 86 [2020-01-16 18:31:08,468 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-01-16 18:31:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2020-01-16 18:31:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-01-16 18:31:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 160 transitions. [2020-01-16 18:31:08,472 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 160 transitions. Word has length 16 [2020-01-16 18:31:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:08,472 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 160 transitions. [2020-01-16 18:31:08,472 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 160 transitions. [2020-01-16 18:31:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:08,473 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:08,473 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:08,474 INFO L426 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:08,474 INFO L82 PathProgramCache]: Analyzing trace with hash 941654993, now seen corresponding path program 95 times [2020-01-16 18:31:08,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:08,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204860240] [2020-01-16 18:31:08,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:08,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204860240] [2020-01-16 18:31:08,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:08,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:08,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797907368] [2020-01-16 18:31:08,670 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:08,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:08,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:08,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:08,671 INFO L87 Difference]: Start difference. First operand 72 states and 160 transitions. Second operand 7 states. [2020-01-16 18:31:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:08,748 INFO L93 Difference]: Finished difference Result 92 states and 184 transitions. [2020-01-16 18:31:08,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:08,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:08,750 INFO L225 Difference]: With dead ends: 92 [2020-01-16 18:31:08,750 INFO L226 Difference]: Without dead ends: 84 [2020-01-16 18:31:08,750 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-01-16 18:31:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2020-01-16 18:31:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-01-16 18:31:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 163 transitions. [2020-01-16 18:31:08,753 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 163 transitions. Word has length 16 [2020-01-16 18:31:08,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:08,754 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 163 transitions. [2020-01-16 18:31:08,754 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:08,754 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 163 transitions. [2020-01-16 18:31:08,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:08,755 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:08,755 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:08,755 INFO L426 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:08,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:08,756 INFO L82 PathProgramCache]: Analyzing trace with hash 942249639, now seen corresponding path program 96 times [2020-01-16 18:31:08,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:08,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915875935] [2020-01-16 18:31:08,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:08,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915875935] [2020-01-16 18:31:08,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:08,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:08,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405911501] [2020-01-16 18:31:08,950 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:08,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:08,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:08,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:08,951 INFO L87 Difference]: Start difference. First operand 74 states and 163 transitions. Second operand 7 states. [2020-01-16 18:31:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:09,026 INFO L93 Difference]: Finished difference Result 83 states and 173 transitions. [2020-01-16 18:31:09,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:09,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:09,028 INFO L225 Difference]: With dead ends: 83 [2020-01-16 18:31:09,028 INFO L226 Difference]: Without dead ends: 69 [2020-01-16 18:31:09,028 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-01-16 18:31:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-01-16 18:31:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-01-16 18:31:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 155 transitions. [2020-01-16 18:31:09,032 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 155 transitions. Word has length 16 [2020-01-16 18:31:09,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:09,032 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 155 transitions. [2020-01-16 18:31:09,032 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 155 transitions. [2020-01-16 18:31:09,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:09,033 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:09,033 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:09,033 INFO L426 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:09,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:09,034 INFO L82 PathProgramCache]: Analyzing trace with hash -370908157, now seen corresponding path program 97 times [2020-01-16 18:31:09,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:09,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989076200] [2020-01-16 18:31:09,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:09,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989076200] [2020-01-16 18:31:09,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:09,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:09,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562834659] [2020-01-16 18:31:09,218 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:09,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:09,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:09,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:09,218 INFO L87 Difference]: Start difference. First operand 69 states and 155 transitions. Second operand 7 states. [2020-01-16 18:31:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:09,259 INFO L93 Difference]: Finished difference Result 111 states and 213 transitions. [2020-01-16 18:31:09,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:09,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:09,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:09,260 INFO L225 Difference]: With dead ends: 111 [2020-01-16 18:31:09,260 INFO L226 Difference]: Without dead ends: 99 [2020-01-16 18:31:09,261 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-01-16 18:31:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 75. [2020-01-16 18:31:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:31:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 164 transitions. [2020-01-16 18:31:09,263 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 164 transitions. Word has length 16 [2020-01-16 18:31:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:09,264 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 164 transitions. [2020-01-16 18:31:09,264 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 164 transitions. [2020-01-16 18:31:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:09,264 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:09,264 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:09,265 INFO L426 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:09,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:09,265 INFO L82 PathProgramCache]: Analyzing trace with hash -368774737, now seen corresponding path program 98 times [2020-01-16 18:31:09,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:09,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65614993] [2020-01-16 18:31:09,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:09,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65614993] [2020-01-16 18:31:09,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:09,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:09,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500350196] [2020-01-16 18:31:09,398 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:09,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:09,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:09,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:09,398 INFO L87 Difference]: Start difference. First operand 75 states and 164 transitions. Second operand 7 states. [2020-01-16 18:31:09,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:09,449 INFO L93 Difference]: Finished difference Result 109 states and 205 transitions. [2020-01-16 18:31:09,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:09,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:09,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:09,450 INFO L225 Difference]: With dead ends: 109 [2020-01-16 18:31:09,450 INFO L226 Difference]: Without dead ends: 93 [2020-01-16 18:31:09,451 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-01-16 18:31:09,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2020-01-16 18:31:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-01-16 18:31:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 151 transitions. [2020-01-16 18:31:09,453 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 151 transitions. Word has length 16 [2020-01-16 18:31:09,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:09,453 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 151 transitions. [2020-01-16 18:31:09,454 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 151 transitions. [2020-01-16 18:31:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:09,454 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:09,454 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:09,454 INFO L426 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:09,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1651313597, now seen corresponding path program 99 times [2020-01-16 18:31:09,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:09,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702220069] [2020-01-16 18:31:09,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:09,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702220069] [2020-01-16 18:31:09,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:09,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:09,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680381170] [2020-01-16 18:31:09,611 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:09,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:09,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:09,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:09,611 INFO L87 Difference]: Start difference. First operand 69 states and 151 transitions. Second operand 7 states. [2020-01-16 18:31:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:09,657 INFO L93 Difference]: Finished difference Result 106 states and 198 transitions. [2020-01-16 18:31:09,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:09,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:09,659 INFO L225 Difference]: With dead ends: 106 [2020-01-16 18:31:09,659 INFO L226 Difference]: Without dead ends: 94 [2020-01-16 18:31:09,659 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-01-16 18:31:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2020-01-16 18:31:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-01-16 18:31:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 155 transitions. [2020-01-16 18:31:09,663 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 155 transitions. Word has length 16 [2020-01-16 18:31:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:09,663 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 155 transitions. [2020-01-16 18:31:09,663 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 155 transitions. [2020-01-16 18:31:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:09,664 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:09,664 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:09,664 INFO L426 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:09,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1468150063, now seen corresponding path program 100 times [2020-01-16 18:31:09,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:09,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406244112] [2020-01-16 18:31:09,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:09,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406244112] [2020-01-16 18:31:09,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:09,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:09,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328407808] [2020-01-16 18:31:09,810 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:09,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:09,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:09,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:09,811 INFO L87 Difference]: Start difference. First operand 72 states and 155 transitions. Second operand 7 states. [2020-01-16 18:31:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:09,873 INFO L93 Difference]: Finished difference Result 102 states and 188 transitions. [2020-01-16 18:31:09,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:09,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:09,874 INFO L225 Difference]: With dead ends: 102 [2020-01-16 18:31:09,874 INFO L226 Difference]: Without dead ends: 91 [2020-01-16 18:31:09,874 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:09,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-01-16 18:31:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 69. [2020-01-16 18:31:09,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-01-16 18:31:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 148 transitions. [2020-01-16 18:31:09,876 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 148 transitions. Word has length 16 [2020-01-16 18:31:09,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:09,877 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 148 transitions. [2020-01-16 18:31:09,877 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 148 transitions. [2020-01-16 18:31:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:09,877 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:09,877 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:09,878 INFO L426 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:09,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1834593451, now seen corresponding path program 101 times [2020-01-16 18:31:09,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:09,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618972149] [2020-01-16 18:31:09,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:10,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618972149] [2020-01-16 18:31:10,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:10,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:10,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456768202] [2020-01-16 18:31:10,032 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:10,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:10,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:10,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:10,033 INFO L87 Difference]: Start difference. First operand 69 states and 148 transitions. Second operand 7 states. [2020-01-16 18:31:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:10,089 INFO L93 Difference]: Finished difference Result 101 states and 187 transitions. [2020-01-16 18:31:10,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:10,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:10,090 INFO L225 Difference]: With dead ends: 101 [2020-01-16 18:31:10,090 INFO L226 Difference]: Without dead ends: 91 [2020-01-16 18:31:10,091 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-01-16 18:31:10,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2020-01-16 18:31:10,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-01-16 18:31:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 151 transitions. [2020-01-16 18:31:10,093 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 151 transitions. Word has length 16 [2020-01-16 18:31:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:10,093 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 151 transitions. [2020-01-16 18:31:10,093 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 151 transitions. [2020-01-16 18:31:10,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:10,098 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:10,098 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:10,099 INFO L426 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:10,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:10,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1116203925, now seen corresponding path program 102 times [2020-01-16 18:31:10,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:10,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110646644] [2020-01-16 18:31:10,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:10,223 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110646644] [2020-01-16 18:31:10,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:10,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:10,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850804788] [2020-01-16 18:31:10,223 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:10,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:10,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:10,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:10,224 INFO L87 Difference]: Start difference. First operand 71 states and 151 transitions. Second operand 7 states. [2020-01-16 18:31:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:10,279 INFO L93 Difference]: Finished difference Result 99 states and 181 transitions. [2020-01-16 18:31:10,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:10,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:10,280 INFO L225 Difference]: With dead ends: 99 [2020-01-16 18:31:10,280 INFO L226 Difference]: Without dead ends: 85 [2020-01-16 18:31:10,280 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-01-16 18:31:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 65. [2020-01-16 18:31:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-01-16 18:31:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 139 transitions. [2020-01-16 18:31:10,282 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 139 transitions. Word has length 16 [2020-01-16 18:31:10,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:10,282 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 139 transitions. [2020-01-16 18:31:10,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 139 transitions. [2020-01-16 18:31:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:10,283 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:10,283 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:10,283 INFO L426 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:10,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:10,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1956127215, now seen corresponding path program 103 times [2020-01-16 18:31:10,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:10,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324911611] [2020-01-16 18:31:10,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:10,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324911611] [2020-01-16 18:31:10,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:10,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:10,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482385189] [2020-01-16 18:31:10,444 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:10,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:10,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:10,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:10,445 INFO L87 Difference]: Start difference. First operand 65 states and 139 transitions. Second operand 7 states. [2020-01-16 18:31:10,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:10,485 INFO L93 Difference]: Finished difference Result 101 states and 183 transitions. [2020-01-16 18:31:10,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:10,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:10,486 INFO L225 Difference]: With dead ends: 101 [2020-01-16 18:31:10,487 INFO L226 Difference]: Without dead ends: 89 [2020-01-16 18:31:10,487 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-01-16 18:31:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2020-01-16 18:31:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-01-16 18:31:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 134 transitions. [2020-01-16 18:31:10,490 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 134 transitions. Word has length 16 [2020-01-16 18:31:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:10,490 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 134 transitions. [2020-01-16 18:31:10,490 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 134 transitions. [2020-01-16 18:31:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:10,491 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:10,491 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:10,491 INFO L426 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:10,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1953993795, now seen corresponding path program 104 times [2020-01-16 18:31:10,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:10,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753472439] [2020-01-16 18:31:10,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:10,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753472439] [2020-01-16 18:31:10,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:10,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:10,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738791510] [2020-01-16 18:31:10,645 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:10,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:10,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:10,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:10,645 INFO L87 Difference]: Start difference. First operand 65 states and 134 transitions. Second operand 7 states. [2020-01-16 18:31:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:10,702 INFO L93 Difference]: Finished difference Result 99 states and 175 transitions. [2020-01-16 18:31:10,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:10,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:10,703 INFO L225 Difference]: With dead ends: 99 [2020-01-16 18:31:10,703 INFO L226 Difference]: Without dead ends: 83 [2020-01-16 18:31:10,703 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-01-16 18:31:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 59. [2020-01-16 18:31:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-01-16 18:31:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 120 transitions. [2020-01-16 18:31:10,705 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 120 transitions. Word has length 16 [2020-01-16 18:31:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:10,706 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 120 transitions. [2020-01-16 18:31:10,706 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 120 transitions. [2020-01-16 18:31:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:10,706 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:10,706 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:10,706 INFO L426 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:10,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:10,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1434938509, now seen corresponding path program 105 times [2020-01-16 18:31:10,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:10,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131671246] [2020-01-16 18:31:10,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:10,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131671246] [2020-01-16 18:31:10,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:10,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:10,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232532390] [2020-01-16 18:31:10,859 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:10,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:10,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:10,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:10,859 INFO L87 Difference]: Start difference. First operand 59 states and 120 transitions. Second operand 7 states. [2020-01-16 18:31:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:10,898 INFO L93 Difference]: Finished difference Result 92 states and 162 transitions. [2020-01-16 18:31:10,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:10,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:10,900 INFO L225 Difference]: With dead ends: 92 [2020-01-16 18:31:10,900 INFO L226 Difference]: Without dead ends: 80 [2020-01-16 18:31:10,900 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:10,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-01-16 18:31:10,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2020-01-16 18:31:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-01-16 18:31:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 126 transitions. [2020-01-16 18:31:10,902 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 126 transitions. Word has length 16 [2020-01-16 18:31:10,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:10,902 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 126 transitions. [2020-01-16 18:31:10,902 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 126 transitions. [2020-01-16 18:31:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:10,903 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:10,903 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:10,903 INFO L426 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:10,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:10,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1473916669, now seen corresponding path program 106 times [2020-01-16 18:31:10,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:10,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133774255] [2020-01-16 18:31:10,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:11,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133774255] [2020-01-16 18:31:11,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:11,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:11,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988233718] [2020-01-16 18:31:11,101 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:11,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:11,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:11,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:11,103 INFO L87 Difference]: Start difference. First operand 63 states and 126 transitions. Second operand 7 states. [2020-01-16 18:31:11,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:11,171 INFO L93 Difference]: Finished difference Result 82 states and 147 transitions. [2020-01-16 18:31:11,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:11,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:11,173 INFO L225 Difference]: With dead ends: 82 [2020-01-16 18:31:11,173 INFO L226 Difference]: Without dead ends: 69 [2020-01-16 18:31:11,173 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-01-16 18:31:11,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-01-16 18:31:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-01-16 18:31:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 116 transitions. [2020-01-16 18:31:11,176 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 116 transitions. Word has length 16 [2020-01-16 18:31:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:11,176 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 116 transitions. [2020-01-16 18:31:11,177 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 116 transitions. [2020-01-16 18:31:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:11,177 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:11,178 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:11,178 INFO L426 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:11,178 INFO L82 PathProgramCache]: Analyzing trace with hash 340355231, now seen corresponding path program 107 times [2020-01-16 18:31:11,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:11,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988201371] [2020-01-16 18:31:11,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:11,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988201371] [2020-01-16 18:31:11,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:11,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:11,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221040590] [2020-01-16 18:31:11,394 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:11,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:11,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:11,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:11,395 INFO L87 Difference]: Start difference. First operand 59 states and 116 transitions. Second operand 7 states. [2020-01-16 18:31:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:11,465 INFO L93 Difference]: Finished difference Result 89 states and 153 transitions. [2020-01-16 18:31:11,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:11,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:11,466 INFO L225 Difference]: With dead ends: 89 [2020-01-16 18:31:11,466 INFO L226 Difference]: Without dead ends: 79 [2020-01-16 18:31:11,466 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-01-16 18:31:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 62. [2020-01-16 18:31:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-01-16 18:31:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 121 transitions. [2020-01-16 18:31:11,468 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 121 transitions. Word has length 16 [2020-01-16 18:31:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:11,468 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 121 transitions. [2020-01-16 18:31:11,468 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 121 transitions. [2020-01-16 18:31:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:11,469 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:11,469 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:11,470 INFO L426 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:11,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:11,470 INFO L82 PathProgramCache]: Analyzing trace with hash 243832391, now seen corresponding path program 108 times [2020-01-16 18:31:11,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:11,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352294928] [2020-01-16 18:31:11,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:11,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352294928] [2020-01-16 18:31:11,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:11,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:11,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491497561] [2020-01-16 18:31:11,629 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:11,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:11,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:11,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:11,630 INFO L87 Difference]: Start difference. First operand 62 states and 121 transitions. Second operand 7 states. [2020-01-16 18:31:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:11,681 INFO L93 Difference]: Finished difference Result 81 states and 142 transitions. [2020-01-16 18:31:11,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:11,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:11,682 INFO L225 Difference]: With dead ends: 81 [2020-01-16 18:31:11,682 INFO L226 Difference]: Without dead ends: 63 [2020-01-16 18:31:11,682 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-01-16 18:31:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-01-16 18:31:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-01-16 18:31:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 103 transitions. [2020-01-16 18:31:11,684 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 103 transitions. Word has length 16 [2020-01-16 18:31:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:11,684 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 103 transitions. [2020-01-16 18:31:11,684 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 103 transitions. [2020-01-16 18:31:11,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:11,685 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:11,685 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:11,685 INFO L426 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:11,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1803137139, now seen corresponding path program 109 times [2020-01-16 18:31:11,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:11,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248402814] [2020-01-16 18:31:11,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:11,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248402814] [2020-01-16 18:31:11,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:11,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:11,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948027092] [2020-01-16 18:31:11,827 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:11,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:11,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:11,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:11,827 INFO L87 Difference]: Start difference. First operand 53 states and 103 transitions. Second operand 7 states. [2020-01-16 18:31:11,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:11,865 INFO L93 Difference]: Finished difference Result 81 states and 133 transitions. [2020-01-16 18:31:11,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:11,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:11,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:11,866 INFO L225 Difference]: With dead ends: 81 [2020-01-16 18:31:11,866 INFO L226 Difference]: Without dead ends: 69 [2020-01-16 18:31:11,866 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-01-16 18:31:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 53. [2020-01-16 18:31:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-01-16 18:31:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 100 transitions. [2020-01-16 18:31:11,868 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 100 transitions. Word has length 16 [2020-01-16 18:31:11,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:11,869 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 100 transitions. [2020-01-16 18:31:11,869 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 100 transitions. [2020-01-16 18:31:11,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:11,869 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:11,870 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:11,870 INFO L426 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:11,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:11,870 INFO L82 PathProgramCache]: Analyzing trace with hash 627633503, now seen corresponding path program 110 times [2020-01-16 18:31:11,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:11,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467695515] [2020-01-16 18:31:11,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:12,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467695515] [2020-01-16 18:31:12,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:12,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:12,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522634969] [2020-01-16 18:31:12,017 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:12,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:12,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:12,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:12,018 INFO L87 Difference]: Start difference. First operand 53 states and 100 transitions. Second operand 7 states. [2020-01-16 18:31:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:12,065 INFO L93 Difference]: Finished difference Result 77 states and 123 transitions. [2020-01-16 18:31:12,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:12,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:12,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:12,065 INFO L225 Difference]: With dead ends: 77 [2020-01-16 18:31:12,066 INFO L226 Difference]: Without dead ends: 66 [2020-01-16 18:31:12,066 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-01-16 18:31:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2020-01-16 18:31:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-01-16 18:31:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 93 transitions. [2020-01-16 18:31:12,067 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 93 transitions. Word has length 16 [2020-01-16 18:31:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:12,068 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 93 transitions. [2020-01-16 18:31:12,068 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 93 transitions. [2020-01-16 18:31:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:12,068 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:12,069 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:12,069 INFO L426 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:12,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:12,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1821571165, now seen corresponding path program 111 times [2020-01-16 18:31:12,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:12,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386968735] [2020-01-16 18:31:12,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:12,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386968735] [2020-01-16 18:31:12,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:12,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:12,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988450907] [2020-01-16 18:31:12,194 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:12,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:12,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:12,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:12,194 INFO L87 Difference]: Start difference. First operand 50 states and 93 transitions. Second operand 7 states. [2020-01-16 18:31:12,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:12,232 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2020-01-16 18:31:12,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:12,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:12,233 INFO L225 Difference]: With dead ends: 73 [2020-01-16 18:31:12,234 INFO L226 Difference]: Without dead ends: 61 [2020-01-16 18:31:12,234 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-01-16 18:31:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2020-01-16 18:31:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-01-16 18:31:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 79 transitions. [2020-01-16 18:31:12,236 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 79 transitions. Word has length 16 [2020-01-16 18:31:12,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:12,236 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 79 transitions. [2020-01-16 18:31:12,236 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 79 transitions. [2020-01-16 18:31:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:12,237 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:12,237 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:12,237 INFO L426 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:12,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:12,237 INFO L82 PathProgramCache]: Analyzing trace with hash 926097059, now seen corresponding path program 112 times [2020-01-16 18:31:12,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:12,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677699914] [2020-01-16 18:31:12,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:12,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677699914] [2020-01-16 18:31:12,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:12,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:12,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113893655] [2020-01-16 18:31:12,375 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:12,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:12,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:12,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:12,376 INFO L87 Difference]: Start difference. First operand 44 states and 79 transitions. Second operand 7 states. [2020-01-16 18:31:12,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:12,429 INFO L93 Difference]: Finished difference Result 63 states and 100 transitions. [2020-01-16 18:31:12,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:12,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:12,430 INFO L225 Difference]: With dead ends: 63 [2020-01-16 18:31:12,430 INFO L226 Difference]: Without dead ends: 50 [2020-01-16 18:31:12,431 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:12,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-01-16 18:31:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2020-01-16 18:31:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-01-16 18:31:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 70 transitions. [2020-01-16 18:31:12,433 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 70 transitions. Word has length 16 [2020-01-16 18:31:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:12,433 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 70 transitions. [2020-01-16 18:31:12,433 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 70 transitions. [2020-01-16 18:31:12,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:12,433 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:12,434 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:12,434 INFO L426 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:12,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:12,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1082979805, now seen corresponding path program 113 times [2020-01-16 18:31:12,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:12,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110094305] [2020-01-16 18:31:12,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:12,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110094305] [2020-01-16 18:31:12,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:12,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:12,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982989079] [2020-01-16 18:31:12,569 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:12,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:12,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:12,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:12,569 INFO L87 Difference]: Start difference. First operand 40 states and 70 transitions. Second operand 7 states. [2020-01-16 18:31:12,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:12,620 INFO L93 Difference]: Finished difference Result 60 states and 94 transitions. [2020-01-16 18:31:12,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:12,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:12,621 INFO L225 Difference]: With dead ends: 60 [2020-01-16 18:31:12,621 INFO L226 Difference]: Without dead ends: 52 [2020-01-16 18:31:12,621 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-01-16 18:31:12,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2020-01-16 18:31:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-01-16 18:31:12,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 73 transitions. [2020-01-16 18:31:12,623 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 73 transitions. Word has length 16 [2020-01-16 18:31:12,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:12,623 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 73 transitions. [2020-01-16 18:31:12,623 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:12,623 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 73 transitions. [2020-01-16 18:31:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:12,624 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:12,624 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:12,624 INFO L426 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:12,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1082385159, now seen corresponding path program 114 times [2020-01-16 18:31:12,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:12,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742357246] [2020-01-16 18:31:12,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:12,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742357246] [2020-01-16 18:31:12,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:12,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:12,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089585432] [2020-01-16 18:31:12,765 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:12,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:12,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:12,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:12,765 INFO L87 Difference]: Start difference. First operand 42 states and 73 transitions. Second operand 7 states. [2020-01-16 18:31:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:12,817 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-01-16 18:31:12,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:12,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:12,818 INFO L225 Difference]: With dead ends: 51 [2020-01-16 18:31:12,819 INFO L226 Difference]: Without dead ends: 37 [2020-01-16 18:31:12,819 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-01-16 18:31:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-01-16 18:31:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-01-16 18:31:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 63 transitions. [2020-01-16 18:31:12,821 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 63 transitions. Word has length 16 [2020-01-16 18:31:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:12,821 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 63 transitions. [2020-01-16 18:31:12,821 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 63 transitions. [2020-01-16 18:31:12,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:12,822 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:12,822 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:12,822 INFO L426 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:12,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1811485409, now seen corresponding path program 115 times [2020-01-16 18:31:12,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:12,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293182575] [2020-01-16 18:31:12,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:12,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293182575] [2020-01-16 18:31:12,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:12,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:12,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672220204] [2020-01-16 18:31:12,957 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:12,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:12,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:12,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:12,958 INFO L87 Difference]: Start difference. First operand 37 states and 63 transitions. Second operand 7 states. [2020-01-16 18:31:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:13,008 INFO L93 Difference]: Finished difference Result 54 states and 81 transitions. [2020-01-16 18:31:13,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:13,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:13,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:13,009 INFO L225 Difference]: With dead ends: 54 [2020-01-16 18:31:13,009 INFO L226 Difference]: Without dead ends: 44 [2020-01-16 18:31:13,009 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:13,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-01-16 18:31:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2020-01-16 18:31:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-01-16 18:31:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 61 transitions. [2020-01-16 18:31:13,010 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 61 transitions. Word has length 16 [2020-01-16 18:31:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:13,011 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 61 transitions. [2020-01-16 18:31:13,011 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:13,011 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 61 transitions. [2020-01-16 18:31:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:13,011 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:13,011 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:13,011 INFO L426 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:13,011 INFO L82 PathProgramCache]: Analyzing trace with hash -467315489, now seen corresponding path program 116 times [2020-01-16 18:31:13,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:13,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752389957] [2020-01-16 18:31:13,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:13,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752389957] [2020-01-16 18:31:13,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:13,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:13,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894595427] [2020-01-16 18:31:13,141 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:13,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:13,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:13,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:13,141 INFO L87 Difference]: Start difference. First operand 37 states and 61 transitions. Second operand 7 states. [2020-01-16 18:31:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:13,198 INFO L93 Difference]: Finished difference Result 52 states and 75 transitions. [2020-01-16 18:31:13,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:13,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:13,199 INFO L225 Difference]: With dead ends: 52 [2020-01-16 18:31:13,199 INFO L226 Difference]: Without dead ends: 42 [2020-01-16 18:31:13,200 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-01-16 18:31:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-01-16 18:31:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-01-16 18:31:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-01-16 18:31:13,202 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 16 [2020-01-16 18:31:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:13,202 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-01-16 18:31:13,202 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-01-16 18:31:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:13,203 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:13,203 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:13,203 INFO L426 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:13,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1793051383, now seen corresponding path program 117 times [2020-01-16 18:31:13,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:13,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221883551] [2020-01-16 18:31:13,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:13,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221883551] [2020-01-16 18:31:13,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:13,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:13,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284057233] [2020-01-16 18:31:13,374 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:13,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:13,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:13,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:13,375 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 7 states. [2020-01-16 18:31:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:13,449 INFO L93 Difference]: Finished difference Result 48 states and 67 transitions. [2020-01-16 18:31:13,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:13,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:13,450 INFO L225 Difference]: With dead ends: 48 [2020-01-16 18:31:13,450 INFO L226 Difference]: Without dead ends: 38 [2020-01-16 18:31:13,451 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-01-16 18:31:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-01-16 18:31:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-01-16 18:31:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2020-01-16 18:31:13,452 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 46 transitions. Word has length 16 [2020-01-16 18:31:13,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:13,453 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-01-16 18:31:13,453 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 46 transitions. [2020-01-16 18:31:13,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:13,453 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:13,454 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:13,454 INFO L426 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:13,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1548897127, now seen corresponding path program 118 times [2020-01-16 18:31:13,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:13,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594569526] [2020-01-16 18:31:13,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:13,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594569526] [2020-01-16 18:31:13,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:13,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:13,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774456670] [2020-01-16 18:31:13,645 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:13,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:13,645 INFO L87 Difference]: Start difference. First operand 31 states and 46 transitions. Second operand 7 states. [2020-01-16 18:31:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:13,705 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2020-01-16 18:31:13,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:13,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:13,705 INFO L225 Difference]: With dead ends: 40 [2020-01-16 18:31:13,705 INFO L226 Difference]: Without dead ends: 28 [2020-01-16 18:31:13,706 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-01-16 18:31:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-01-16 18:31:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-01-16 18:31:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2020-01-16 18:31:13,707 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 16 [2020-01-16 18:31:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:13,707 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2020-01-16 18:31:13,707 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2020-01-16 18:31:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:13,708 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:13,708 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:13,708 INFO L426 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:13,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:13,708 INFO L82 PathProgramCache]: Analyzing trace with hash 406425191, now seen corresponding path program 119 times [2020-01-16 18:31:13,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:13,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127380063] [2020-01-16 18:31:13,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:13,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127380063] [2020-01-16 18:31:13,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:13,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:13,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875839841] [2020-01-16 18:31:13,844 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:13,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:13,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:13,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:13,845 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand 7 states. [2020-01-16 18:31:13,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:13,890 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-01-16 18:31:13,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:13,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:13,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:13,890 INFO L225 Difference]: With dead ends: 34 [2020-01-16 18:31:13,891 INFO L226 Difference]: Without dead ends: 26 [2020-01-16 18:31:13,891 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-01-16 18:31:13,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-01-16 18:31:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-01-16 18:31:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2020-01-16 18:31:13,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 16 [2020-01-16 18:31:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:13,892 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2020-01-16 18:31:13,892 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2020-01-16 18:31:13,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:31:13,893 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:31:13,893 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:31:13,893 INFO L426 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:31:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:31:13,893 INFO L82 PathProgramCache]: Analyzing trace with hash 407019837, now seen corresponding path program 120 times [2020-01-16 18:31:13,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:31:13,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091119979] [2020-01-16 18:31:13,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:31:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:31:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:31:14,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091119979] [2020-01-16 18:31:14,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:31:14,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:31:14,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086936479] [2020-01-16 18:31:14,035 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:31:14,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:31:14,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:31:14,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:31:14,035 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 7 states. [2020-01-16 18:31:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:31:14,082 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-01-16 18:31:14,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:31:14,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:31:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:31:14,082 INFO L225 Difference]: With dead ends: 25 [2020-01-16 18:31:14,082 INFO L226 Difference]: Without dead ends: 0 [2020-01-16 18:31:14,083 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:31:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-01-16 18:31:14,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-01-16 18:31:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-01-16 18:31:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-01-16 18:31:14,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-01-16 18:31:14,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:31:14,084 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-01-16 18:31:14,084 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:31:14,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-01-16 18:31:14,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-01-16 18:31:14,087 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 06:31:14 BasicIcfg [2020-01-16 18:31:14,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 18:31:14,089 INFO L168 Benchmark]: Toolchain (without parser) took 28971.18 ms. Allocated memory was 136.3 MB in the beginning and 515.9 MB in the end (delta: 379.6 MB). Free memory was 118.3 MB in the beginning and 360.4 MB in the end (delta: -242.1 MB). Peak memory consumption was 137.5 MB. Max. memory is 7.1 GB. [2020-01-16 18:31:14,089 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.40 ms. Allocated memory is still 136.3 MB. Free memory is still 119.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-01-16 18:31:14,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.11 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 116.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 18:31:14,090 INFO L168 Benchmark]: Boogie Preprocessor took 23.15 ms. Allocated memory is still 136.3 MB. Free memory was 116.2 MB in the beginning and 115.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 7.1 GB. [2020-01-16 18:31:14,091 INFO L168 Benchmark]: RCFGBuilder took 258.20 ms. Allocated memory is still 136.3 MB. Free memory was 115.3 MB in the beginning and 103.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-01-16 18:31:14,091 INFO L168 Benchmark]: TraceAbstraction took 28650.45 ms. Allocated memory was 136.3 MB in the beginning and 515.9 MB in the end (delta: 379.6 MB). Free memory was 103.4 MB in the beginning and 360.4 MB in the end (delta: -257.0 MB). Peak memory consumption was 122.6 MB. Max. memory is 7.1 GB. [2020-01-16 18:31:14,093 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.40 ms. Allocated memory is still 136.3 MB. Free memory is still 119.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.11 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 116.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.15 ms. Allocated memory is still 136.3 MB. Free memory was 116.2 MB in the beginning and 115.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 7.1 GB. * RCFGBuilder took 258.20 ms. Allocated memory is still 136.3 MB. Free memory was 115.3 MB in the beginning and 103.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28650.45 ms. Allocated memory was 136.3 MB in the beginning and 515.9 MB in the end (delta: 379.6 MB). Free memory was 103.4 MB in the beginning and 360.4 MB in the end (delta: -257.0 MB). Peak memory consumption was 122.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.3s, 44 ProgramPointsBefore, 37 ProgramPointsAfterwards, 48 TransitionsBefore, 42 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 120 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 130 CheckedPairsTotal, 6 TotalNumberOfCompositions - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 28.4s, OverallIterations: 124, TraceHistogramMax: 1, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 4412 SDtfs, 6995 SDslu, 6966 SDs, 0 SdLazy, 2498 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 724 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 20.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 124 MinimizatonAttempts, 3834 StatesRemovedByMinimization, 115 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 1984 NumberOfCodeBlocks, 1984 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1860 ConstructedInterpolants, 0 QuantifiedInterpolants, 417870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 124 InterpolantComputations, 124 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...